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Journal articles on the topic 'Recording device'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Sheahan, Guy, Richard Reznick, Don Klinger, Leslie Flynn, and Boris Zevin. "Comparison of Personal Video Technology for Teaching and Assessment of Surgical Skills." Journal of Graduate Medical Education 11, no. 3 (June 1, 2019): 328–31. http://dx.doi.org/10.4300/jgme-d-18-01082.1.

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ABSTRACT Background Improvements in personal technology have made video recording for teaching and assessment of surgical skills possible. Objective This study compared 5 personal video-recording devices based on their utility (image quality, hardware, mounting options, and accessibility) in recording open surgical procedures. Methods Open procedures in a simulated setting were recorded using smartphones and tablets (MOB), laptops (LAP), sports cameras such as GoPro (SC), single-lens reflex cameras (DSLR), and spy camera glasses (SPY). Utility was rated by consensus between 2 investigators trained in observation of technology using a 5-point Likert scale (1, poor, to 5, excellent). Results A total of 150 hours of muted video were reviewed with a minimum 1 hour for each device. Image quality was good (3.8) across all devices, although this was influenced by the device-mounting requirements (4.2) and its proximity to the area of interest. Device hardware (battery life and storage capacity) was problematic for long procedures (3.8). Availability of devices was high (4.2). Conclusions Personal video-recording technology can be used for assessment and teaching of open surgical skills. DSLR and SC provide the best images. DSLR provides the best zoom capability from an offset position, while SC can be placed closer to the operative field without impairing sterility. Laptops provide best overall utility for long procedures due to video file size. All devices require stable recording platforms (eg, bench space, dedicated mounting accessories). Head harnesses (SC, SPY) provide opportunities for “point-of-view” recordings. MOB and LAP can be used for multiple concurrent recordings.

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Kawamura, Ichiro, Yoshitaka Fojioka, and Makoto Fujita. "Recording disc reproducing device." Journal of the Acoustical Society of America 81, no. 5 (May 1987): 1663. http://dx.doi.org/10.1121/1.395056.

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Goolkasian, Aaron J. "Audio recording playback device." Journal of the Acoustical Society of America 119, no. 4 (2006): 1910. http://dx.doi.org/10.1121/1.2195811.

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Du, Jiangang, Ingmar H. Riedel-Kruse, Janna C. Nawroth, Michael L. Roukes, Gilles Laurent, and Sotiris C. Masmanidis. "High-Resolution Three-Dimensional Extracellular Recording of Neuronal Activity With Microfabricated Electrode Arrays." Journal of Neurophysiology 101, no. 3 (March 2009): 1671–78. http://dx.doi.org/10.1152/jn.90992.2008.

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Microelectrode array recordings of neuronal activity present significant opportunities for studying the brain with single-cell and spike-time precision. However, challenges in device manufacturing constrain dense multisite recordings to two spatial dimensions, whereas access to the three-dimensional (3D) structure of many brain regions appears to remain a challenge. To overcome this limitation, we present two novel recording modalities of silicon-based devices aimed at establishing 3D functionality. First, we fabricated a dual-side electrode array by patterning recording sites on both the front and back of an implantable microstructure. We found that the majority of single-unit spikes could not be simultaneously detected from both sides, suggesting that in addition to providing higher spatial resolution measurements than that of single-side devices, dual-side arrays also lead to increased recording yield. Second, we obtained recordings along three principal directions with a multilayer array and demonstrated 3D spike source localization within the enclosed measurement space. The large-scale integration of such dual-side and multilayer arrays is expected to provide massively parallel recording capabilities in the brain.

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Sundbom, Per, Michael Roth, Hans Granfeldt, Daniel M. Karlsson, Henrik Ahn, Fredrik Gustafsson, and Laila Hubbert. "Sound analysis of a left ventricular assist device: A technical evaluation of iOS devices." International Journal of Artificial Organs 41, no. 5 (March 9, 2018): 254–60. http://dx.doi.org/10.1177/0391398818762352.

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Introduction: The use of left ventricular assist device (LVAD) has grown rapidly. Adverse events do continue to occur. In recent years, analysis of LVAD sound recordings emerged as a means to monitor pump function and detect pump thrombosis. The aim of this study was to characterize the sounds from HeartMate II and to evaluate the use of handheld iOS devices for sound recordings. Method: Signal analysis of LVAD sound recordings, with dedicated recording equipment and iOS devices, was performed. Two LVADs running in mock loop circuits were compared to an implanted LVAD. Spectral analysis and parametric signal models were explored to quantify the sound and potentially detect changes in it. Results: The sound recordings of two LVADs in individual mock loop circuits and a third one implanted in a patient appeared to be similar. Qualitatively, sound characteristics were preserved following changes in pump speed. Recordings using dedicated equipment showed that HeartMate II sound comprises low-frequency components corresponding to pump impeller rotation, as well as high-frequency components due to a pulse width modulation of the electric power to the pump. These different signal components interact and result in a complicated frequency spectrum. The iPhone and iPod recordings could not reproduce the sounds as well as the dedicated equipment. In particular, lower frequencies were affected by outside disturbances. Discussion: This article outlines a systematic approach to LVAD sound analysis using signal processing methods to quantify and potentially detect changes, and describes some of the challenges, for example, with the use of inexpensive recording devices.

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Rahman, Nilufar, Fouzia Binte Kasem, Md Reazul Islam, Md Rafiqul Islam, Rezina Sultana, and Abdul Matin. "Comparison Between Mercury and Liquid Crystal Forehead Thermometers for Measurment of Body Temperature." Journal of Shaheed Suhrawardy Medical College 4, no. 2 (April 3, 2013): 60–61. http://dx.doi.org/10.3329/jssmc.v4i2.14421.

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Background: Body temperature is a measure of the body's ability to generate and get rid of heat. For recording of body temperature several different types of thermometers are available, such as mercury thermometers, digital thermometer, liquid crystal forehead thermometer, and infrared tympanic thermometer are used. The accuracy of the device is to record and grade temperature is uncertain. Objective: The study was carried out the recordings of normal body temperature using liquid crystal forehead thermometer and compare with gold standard oral mercury thermometer. Methodology: Simultaneous recording were made using the two devise in randomly enrolled 150 apparently healthy medical student eighteen (18) to twenty (20) years age of either sex. Written & verbal consent was taken from the students without any coercion. Oraltemperature was recorded with Chinese made mercury thermometer and the forehead temperature was recorded using liquid crystal (Boots, UK) thermometer. Results: No statistical significant difference existed between the recordings of two devices. The mean difference was 0.8 degree. Liquid crystal forehead thermometer recorded higher temperatures. Both the devices recorded temperature within normal range. Conclusions: Sensitivity of liquid-crystal thermometer to detect body temperature is comparable with that of mercury thermometer. It is a good device for home use but health providers should not use it. Mercury thermometer remains the gold standard. DOI: http://dx.doi.org/10.3329/jssmc.v4i2.14421 J Shaheed Suhrawardy Med Coll, 2012;4(2):60-61

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7

Kawamura, Ichiro, Izumi Hino, and Makoto Fujita. "Disk recording and reproducing device." Journal of the Acoustical Society of America 81, no. 5 (May 1987): 1663. http://dx.doi.org/10.1121/1.395055.

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8

Gurr, L. "A PNEUMATIC NEST-RECORDING DEVICE." Ibis 97, no. 3 (April 3, 2008): 584–86. http://dx.doi.org/10.1111/j.1474-919x.1955.tb04986.x.

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9

Lieben, Liesbet. "A miniature living recording device." Nature Reviews Genetics 19, no. 2 (December 11, 2017): 65. http://dx.doi.org/10.1038/nrg.2017.110.

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10

Miyashita, Eiichi. "1. Trend of Recording Device and Future Recording Technology." Journal of the Institute of Image Information and Television Engineers 68, no. 1 (2014): 22–25. http://dx.doi.org/10.3169/itej.68.22.

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11

Xavier, Gregory, Anselm Su Ting, and Norsiah Fauzan. "Quantifying Conventional Electroencephalogram Recordings and Examining its Output Computation with a Quantitative Electroencephalogram." Journal of Cognitive Sciences and Human Development 7, no. 2 (September 22, 2021): 108–20. http://dx.doi.org/10.33736/jcshd.3656.2021.

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Quantitative electroencephalogram enables mathematical analysis of neurological recordings while conventional electroencephalogram lacks the mathematical output; hence, its usage is limited to neurological experts. This study was to determine if quantified conventional electroencephalogram recordings were compatible and comparable with quantitative electroencephalogram recordings. A group of post-call doctors was recruited and subjected to an EEG recording using a conventional electroencephalogram followed by a quantitative electroencephalogram device. The patterns and quantified recording results were compared. A comparative analysis of the two recording sets did not find differences in the recording patterns and statistical analysis. The findings promoted the use of a readily available conventional electroencephalogram in quantitative brain wave studies and have cleared potential compatibility bias towards data merging.

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Yun, Jung-Sik, Woong Kang, and Hyung-Jin Sung. "Measurement of Surface Pressure Fluctuations on a Rotating Blade Using a Digital Recording Device." Transactions of the Korean Society of Mechanical Engineers B 29, no. 10 (October 1, 2005): 1119–29. http://dx.doi.org/10.3795/ksme-b.2005.29.10.1119.

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Rieiro, Héctor, Carolina Diaz-Piedra, José Miguel Morales, Andrés Catena, Samuel Romero, Joaquin Roca-Gonzalez, Luis J. Fuentes, and Leandro L. Di Stasi. "Validation of Electroencephalographic Recordings Obtained with a Consumer-Grade, Single Dry Electrode, Low-Cost Device: A Comparative Study." Sensors 19, no. 12 (June 23, 2019): 2808. http://dx.doi.org/10.3390/s19122808.

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The functional validity of the signal obtained with low-cost electroencephalography (EEG) devices is still under debate. Here, we have conducted an in-depth comparison of the EEG-recordings obtained with a medical-grade golden-cup electrodes ambulatory device, the SOMNOwatch + EEG-6, vs those obtained with a consumer-grade, single dry electrode low-cost device, the NeuroSky MindWave, one of the most affordable devices currently available. We recorded EEG signals at Fp1 using the two different devices simultaneously on 21 participants who underwent two experimental phases: a 12-minute resting state task (alternating two cycles of closed/open eyes periods), followed by 60-minute virtual-driving task. We evaluated the EEG recording quality by comparing the similarity between the temporal data series, their spectra, their signal-to-noise ratio, the reliability of EEG measurements (comparing the closed eyes periods), as well as their blink detection rate. We found substantial agreement between signals: whereas, qualitatively, the NeuroSky MindWave presented higher levels of noise and a biphasic shape of blinks, the similarity metric indicated that signals from both recording devices were significantly correlated. While the NeuroSky MindWave was less reliable, both devices had a similar blink detection rate. Overall, the NeuroSky MindWave is noise-limited, but provides stable recordings even through long periods of time. Furthermore, its data would be of adequate quality compared to that of conventional wet electrode EEG devices, except for a potential calibration error and spectral differences at low frequencies.

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Dobre, Robert-Alexandru, Radu-Ovidiu Preda, and Marian Vlădescu. "Sonic Watermarking Method for Ensuring the Integrity of Audio Recordings." Applied Sciences 10, no. 10 (May 13, 2020): 3367. http://dx.doi.org/10.3390/app10103367.

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Methods for inspecting the integrity of audio recordings become a necessity. The evolution of technology allowed the manufacturing of small, performant, recording devices and significantly decreased the difficulty of audio editing. Any person that participates in a conversation can secretly record it, obtaining their own version of the audio captured using their personal device. The recordings can be easily edited afterwards to change the meaning of the message. The challenge is to prove if recordings were tampered with or not. A reliable solution for this was the highly acclaimed Electrical Network Frequency (ENF) criterion. Newer recording devices are built to avoid picking up the electrical network signal because, from the audio content point of view, it represents noise. Thus, the classic ENF criterion becomes less effective for recordings made with newer devices. The paper describes a novel sonic watermarking (i.e., the watermark is acoustically summed with the dialogue) solution, based on an ambient sound that can be easily controlled and is not suspicious to listeners: the ticking of a clock. This signal is used as a masker for frequency-swept (chirp) signals that are used to encode the ENF and embed it into all the recordings made in a room. The ENF embedded using the proposed watermark solution can be extracted and checked at any later moment to determine if a recording has been tampered with, thus allowing the use of the ENF criterion principles in checking the recordings made with newer devices. The experiments highlight that the method offers very good results in ordinary real-world conditions.

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Stiller, Allison, Joshua Usoro, Jennifer Lawson, Betsiti Araya, María González-González, Vindhya Danda, Walter Voit, Bryan Black, and Joseph Pancrazio. "Mechanically Robust, Softening Shape Memory Polymer Probes for Intracortical Recording." Micromachines 11, no. 6 (June 25, 2020): 619. http://dx.doi.org/10.3390/mi11060619.

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While intracortical microelectrode arrays (MEAs) may be useful in a variety of basic and clinical scenarios, their implementation is hindered by a variety of factors, many of which are related to the stiff material composition of the device. MEAs are often fabricated from high modulus materials such as silicon, leaving devices vulnerable to brittle fracture and thus complicating device fabrication and handling. For this reason, polymer-based devices are being heavily investigated; however, their implementation is often difficult due to mechanical instability that requires insertion aids during implantation. In this study, we design and fabricate intracortical MEAs from a shape memory polymer (SMP) substrate that remains stiff at room temperature but softens to 20 MPa after implantation, therefore allowing the device to be implanted without aids. We demonstrate chronic recordings and electrochemical measurements for 16 weeks in rat cortex and show that the devices are robust to physical deformation, therefore making them advantageous for surgical implementation.

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Ide, Hiroaki, and Hidefumi Nagai. "Acoustic space reproduction method, sound recording device, and sound recording medium." Journal of the Acoustical Society of America 96, no. 1 (July 1994): 617. http://dx.doi.org/10.1121/1.411330.

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17

Kleinrok, M. "Recording centric and eccentric occlusal disturbances with a new recording device." Journal of Prosthetic Dentistry 68, no. 4 (October 1992): 597–606. http://dx.doi.org/10.1016/0022-3913(92)90372-h.

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18

Omoto, K., S. Shigemoto, Y. Suzuki, T. Tajima, and Y. Matsuka. "Whole-day masseter muscle activity recordings using a portable EMG recording device." Journal of Japanese Society of Stomatognathic Function 21, no. 1 (2014): 46–47. http://dx.doi.org/10.7144/sgf.21.46.

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19

Kita, Yuto, Shuhei Tsuruhara, Hiroshi Kubo, Koji Yamashita, Yu Seikoba, Shinnosuke Idogawa, Hirohito Sawahata, et al. "Three-micrometer-diameter needle electrode with an amplifier for extracellular in vivo recordings." Proceedings of the National Academy of Sciences 118, no. 16 (April 12, 2021): e2008233118. http://dx.doi.org/10.1073/pnas.2008233118.

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Microscale needle-electrode devices offer neuronal signal recording capability in brain tissue; however, using needles of smaller geometry to minimize tissue damage causes degradation of electrical properties, including high electrical impedance and low signal-to-noise ratio (SNR) recording. We overcome these limitations using a device assembly technique that uses a single needle-topped amplifier package, called STACK, within a device of ∼1 × 1 mm2. Based on silicon (Si) growth technology, a <3-µm-tip-diameter, 400-µm-length needle electrode was fabricated on a Si block as the module. The high electrical impedance characteristics of the needle electrode were improved by stacking it on the other module of the amplifier. The STACK device exhibited a voltage gain of >0.98 (−0.175 dB), enabling recording of the local field potential and action potentials from the mouse brain in vivo with an improved SNR of 6.2. Additionally, the device allowed us to use a Bluetooth module to demonstrate wireless recording of these neuronal signals; the chronic experiment was also conducted using STACK-implanted mice.

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Zeng, Chunyan, Dongliang Zhu, Zhifeng Wang, Zhenghui Wang, Nan Zhao, and Lu He. "An end-to-end deep source recording device identification system for Web media forensics." International Journal of Web Information Systems 16, no. 4 (August 3, 2020): 413–25. http://dx.doi.org/10.1108/ijwis-06-2020-0038.

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Purpose Most source recording device identification models for Web media forensics are based on a single feature to complete the identification task and often have the disadvantages of long time and poor accuracy. The purpose of this paper is to propose a new method for end-to-end network source identification of multi-feature fusion devices. Design/methodology/approach This paper proposes an efficient multi-feature fusion source recording device identification method based on end-to-end and attention mechanism, so as to achieve efficient and convenient identification of recording devices of Web media forensics. Findings The authors conducted sufficient experiments to prove the effectiveness of the models that they have proposed. The experiments show that the end-to-end system is improved by 7.1% compared to the baseline i-vector system, compared to the authors’ previous system, the accuracy is improved by 0.4%, and the training time is reduced by 50%. Research limitations/implications With the development of Web media forensics and internet technology, the use of Web media as evidence is increasing. Among them, it is particularly important to study the authenticity and accuracy of Web media audio. Originality/value This paper aims to promote the development of source recording device identification and provide effective technology for Web media forensics and judicial record evidence that need to apply device source identification technology.

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Goricke, Rudolf. "Device for stereophonic recording of sound events." Journal of the Acoustical Society of America 93, no. 3 (March 1993): 1682. http://dx.doi.org/10.1121/1.406732.

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Munyard, Paul, Carolyn Busst, Ron Logan-Sinclair, and Andrew Bush. "A new device for ambulatory cough recording." Pediatric Pulmonology 18, no. 3 (September 1994): 178–86. http://dx.doi.org/10.1002/ppul.1950180310.

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23

Woelfel, J. B. "New device for accurately recording centric relation." Journal of Prosthetic Dentistry 56, no. 6 (December 1986): 716–27. http://dx.doi.org/10.1016/0022-3913(86)90152-6.

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Swann, Nicole C., Coralie de Hemptinne, Svjetlana Miocinovic, Salman Qasim, Jill L. Ostrem, Nicholas B. Galifianakis, Marta San Luciano, et al. "Chronic multisite brain recordings from a totally implantable bidirectional neural interface: experience in 5 patients with Parkinson's disease." Journal of Neurosurgery 128, no. 2 (February 2018): 605–16. http://dx.doi.org/10.3171/2016.11.jns161162.

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OBJECTIVEDysfunction of distributed neural networks underlies many brain disorders. The development of neuromodulation therapies depends on a better understanding of these networks. Invasive human brain recordings have a favorable temporal and spatial resolution for the analysis of network phenomena but have generally been limited to acute intraoperative recording or short-term recording through temporarily externalized leads. Here, the authors describe their initial experience with an investigational, first-generation, totally implantable, bidirectional neural interface that allows both continuous therapeutic stimulation and recording of field potentials at multiple sites in a neural network.METHODSUnder a physician-sponsored US Food and Drug Administration investigational device exemption, 5 patients with Parkinson's disease were implanted with the Activa PC+S system (Medtronic Inc.). The device was attached to a quadripolar lead placed in the subdural space over motor cortex, for electrocorticography potential recordings, and to a quadripolar lead in the subthalamic nucleus (STN), for both therapeutic stimulation and recording of local field potentials. Recordings from the brain of each patient were performed at multiple time points over a 1-year period.RESULTSThere were no serious surgical complications or interruptions in deep brain stimulation therapy. Signals in both the cortex and the STN were relatively stable over time, despite a gradual increase in electrode impedance. Canonical movement-related changes in specific frequency bands in the motor cortex were identified in most but not all recordings.CONCLUSIONSThe acquisition of chronic multisite field potentials in humans is feasible. The device performance characteristics described here may inform the design of the next generation of totally implantable neural interfaces. This research tool provides a platform for translating discoveries in brain network dynamics to improved neurostimulation paradigms.Clinical trial registration no.: NCT01934296 (clinicaltrials.gov)

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Suzuki, Shiro. "Coding device and method, decoding device and method, and recording medium." Journal of the Acoustical Society of America 115, no. 3 (2004): 951. http://dx.doi.org/10.1121/1.1697734.

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YU, Kanhua. "Design and Application of Micro-video Course Recording in "General City Planning" Course." International Journal of Emerging Technologies in Learning (iJET) 11, no. 05 (May 23, 2016): 16. http://dx.doi.org/10.3991/ijet.v11i05.5687.

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as information technology flourishes, use ratio of network and mobile terminal devices keeps rising. Microlecture as a new course resource and learning style jumps into people's vision. This paper introduces a microlecture platform which is applied to teach General City Planning. The platform includes the oflowing functions: microlecture making device, classroom live broadcasting and real-time video recording device, microlecture question and answer device, microlecture labeling device and microlecture searching device etc. Based on fully expounding the research background, domestic and overseas situations, this paper analyzes design thought, overall structure and teaching advantage of the platform. The experimental study shows that the microlecture platform is quick and convenient to use. Therefore, it is the optimal platform for both teachers and students.

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Panagakis, Yannis, and Constantine Kotropoulos. "Telephone Handset Identification by Collaborative Representations." International Journal of Digital Crime and Forensics 5, no. 4 (October 2013): 1–14. http://dx.doi.org/10.4018/ijdcf.2013100101.

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Recorded speech signals convey information not only for the speakers' identity and the spoken language, but also for the acquisition devices used for their recording. Therefore, it is reasonable to perform acquisition device identification by analyzing the recorded speech signal. To this end, recording-level spectral, cepstral, and fusion of spectral and cepstral features are employed as suitable representations for device identification. The feature vectors extracted from the training speech recordings are used to form overcomplete dictionaries for the devices. Each test feature vector is represented as a linear combination of all the dictionary columns (i.e., atoms). Since the dimensionality of the feature vectors is much smaller than the number of training speech recordings, there are infinitely many representations of each test feature vector with respect to the dictionary. These representations are referred to as collaborative representations in the sense that all the dictionary atoms collaboratively represent any test feature vector. By imposing the representation to be either sparse (i.e., to admit the minimum norm) or to have the minimum norm, unique collaborative representations are obtained. The classification is performed by assigning each test feature vector the device identity of the dictionary atoms yielding the minimum reconstruction error. This classification method is referred to as the sparse representation-based classifier (SRC) if the sparse collaborative representation is employed and as the least squares collaborative representation-based classifier (LSCRC) in the case of the minimum norm regularized collaborative representation is used for reconstructing the test sample. By employing the LSCRC, state of the art identification accuracy of 97.67% is obtained on a set of 8 telephone handsets, from Lincoln-Labs Handset Database.

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Unsworth, John, Guy Tucker, and Yvonne Hindmarsh. "Man versus Machine: the importance of manual blood pressure measurement skills amongst registered nurses." Journal of Hospital Administration 4, no. 6 (September 6, 2015): 61. http://dx.doi.org/10.5430/jha.v4n6p61.

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Background: The manual recording of blood pressure is widely accepted to be more accurate than the recording of blood pressure using an automated device. Despite this many western healthcare systems have moved almost entirely to the automated recording of this important vital sign using oscillometric devices. Such devices may either fail to record the patient’s blood pressure in persistent hypotension or may give inaccurate readings in people with arteriosclerotic or atherosclerotic changes. This paper explores the importance of manual blood pressure recording, the availability of aneroid sphygmomanometers in UK hospitals and the maintenance of the skills of the workforce following initial nurse education.Methods: Using a survey of nursing students to explore what opportunities they have to practice manual blood pressures in the clinical setting, the paper explores the maintenance of skills following initial nurse education. The paper also describes the results of data collection, using unobtrusive methods, regarding the availability of aneroid sphygmomanometers in general and specialist hospital facilities in Northern England (UK). Data using both methods were collected in the spring of 2014.Results: The results suggest that despite most hospitals having some aneriod sphygmomanometers available (mean was 1 device for every 6 beds in acute, 1 device for every 3 beds in specialist hospitals and 1 device for every 12 beds in mental health) they were rarely used in clinical practice with only 35% of students reporting that they had undertaken a manual blood pressure in a clinical setting during the first year of their course. In addition, some hospitals had no aneroid devices and several others had no central record of location and regular calibration of such devices.Conclusions: The suggested infrequent use of aneroid devices raises a concern that nurses skills in manual blood pressure recording may be subject to decay over time. Given the importance of these skills in patient safety and, in ensuring accurate and effective care, failure to ensure adequate equipment and opportunities for skill maintenance could result in practitioners and hospitals being open to negligence claims

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Chang, Su-Youne, Christopher J. Kimble, Inyong Kim, Seungleal B. Paek, Kenneth R. Kressin, Joshua B. Boesche, Sidney V. Whitlock, et al. "Development of the Mayo Investigational Neuromodulation Control System: toward a closed-loop electrochemical feedback system for deep brain stimulation." Journal of Neurosurgery 119, no. 6 (December 2013): 1556–65. http://dx.doi.org/10.3171/2013.8.jns122142.

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Object Conventional deep brain stimulation (DBS) devices continue to rely on an open-loop system in which stimulation is independent of functional neural feedback. The authors previously proposed that as the foundation of a DBS “smart” device, a closed-loop system based on neurochemical feedback, may have the potential to improve therapeutic outcomes. Alterations in neurochemical release are thought to be linked to the clinical benefit of DBS, and fast-scan cyclic voltammetry (FSCV) has been shown to be effective for recording these evoked neurochemical changes. However, the combination of FSCV with conventional DBS devices interferes with the recording and identification of the evoked analytes. To integrate neurochemical recording with neurostimulation, the authors developed the Mayo Investigational Neuromodulation Control System (MINCS), a novel, wirelessly controlled stimulation device designed to interface with FSCV performed by their previously described Wireless Instantaneous Neurochemical Concentration Sensing System (WINCS). Methods To test the functionality of these integrated devices, various frequencies of electrical stimulation were applied by MINCS to the medial forebrain bundle of the anesthetized rat, and striatal dopamine release was recorded by WINCS. The parameters for FSCV in the present study consisted of a pyramidal voltage waveform applied to the carbon-fiber microelectrode every 100 msec, ramping between −0.4 V and +1.5 V with respect to an Ag/AgCl reference electrode at a scan rate of either 400 V/sec or 1000 V/sec. The carbon-fiber microelectrode was held at the baseline potential of −0.4 V between scans. Results By using MINCS in conjunction with WINCS coordinated through an optic fiber, the authors interleaved intervals of electrical stimulation with FSCV scans and thus obtained artifact-free wireless FSCV recordings. Electrical stimulation of the medial forebrain bundle in the anesthetized rat by MINCS elicited striatal dopamine release that was time-locked to stimulation and increased progressively with stimulation frequency. Conclusions Here, the authors report a series of proof-of-principle tests in the rat brain demonstrating MINCS to be a reliable and flexible stimulation device that, when used in conjunction with WINCS, performs wirelessly controlled stimulation concurrent with artifact-free neurochemical recording. These findings suggest that the integration of neurochemical recording with neurostimulation may be a useful first step toward the development of a closed-loop DBS system for human application.

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McInturff, Stephen P., and William J. Buchser. "A portable device for recording evoked potentials, optimized for pattern ERG." Biomedical Engineering / Biomedizinische Technik 61, no. 1 (February 1, 2016): 69–76. http://dx.doi.org/10.1515/bmt-2015-0042.

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Abstract Recording evoked potentials in un-anesthetized animals and people is a powerful technique to non-invasively measure the function of neurons. As such, the primary output neurons of the eye can be assessed by the pattern electroretinogram (PERG). Currently, electro-physiologic setups to perform PERG or related recordings are costly, complicated, and non-portable. Here, we design a simple steady-state PERG system, based off an Arduino board. The amplifier is built on a shield that fits over a microcontroller board, an Arduino, which digitizes the signal and sends it to a computer that presents stimuli then records and analyzes the evoked potentials. We used the device to record PERG accurately with a sensitivity as low as half a microvolt. The device has also been designed to implement other evoked potential recordings. This simple device can be quickly constructed and used for experiments in moving systems. Additionally, this device can be used to expose students in underserved areas to research technology that they would otherwise not have access to.

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Saito, Etsuro. "Digital audio signal recording device for motion picture film and audio signal recording system for motion picture film employing the digital audio signal recording device." Journal of the Acoustical Society of America 100, no. 1 (1996): 24. http://dx.doi.org/10.1121/1.415936.

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Arnet, Isabelle, Jean-Pierre Rothen, Valerie Albert, and Kurt Hersberger. "Validation of a Novel Electronic Device for Medication Adherence Monitoring of Ambulatory Patients." Pharmacy 7, no. 4 (November 20, 2019): 155. http://dx.doi.org/10.3390/pharmacy7040155.

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Several methods exist for measuring medication adherence. The Time4MedTM device (Adherence Innovations, Hong Kong) is a small, electronic card to affix on medication packaging that records date and time of intakes when a button is pushed. We aimed to validate the device with an emphasis on polypharmacy. Twenty volunteers used Time4MedTM devices with a virtual thrice daily intake over 14 days. Diary-recorded date and time were compared to electronically-stored events. Functionality, reliability and recovery for different stress conditions were calculated. User‘s acceptability was assessed with the System Usability Scale (SUS). Eleven elderly outpatients (mean age 80.2 ± 8.1 years) taking >3 medications daily used the device over 4 weeks. Volunteers logged 847 events. Functionality (100%), sensitivity (94.9%), specificity (99.4%) and recovery (100%) were high. Dropping the smart card and storing it in a refrigerator caused either the recording of false events or no recording at all. The mean SUS score was 82.6 (SD 14.8), demonstrating excellent acceptability. Satisfaction was very high for volunteers and patients, except for pushing the button. Time4MedTM devices are highly accurate in recording, retaining and delivering electronic data of multiple medication intake. They are well accepted by elderly patients. They can be recommended in clinical studies and for practitioners who desire to elucidate adherence patterns of ambulatory patients.

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Bjarnason, Asgeir, Timo Vuorela, Jarmo Verho, Jarno Riistama, Jukka Vanhala, Jukka Lekkala, and Jari Hyttinen. "Implantable Measurement System for Dairy-Cattle Monitoring with Long Recording Time." Advances in Science and Technology 85 (September 2012): 33–38. http://dx.doi.org/10.4028/www.scientific.net/ast.85.33.

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This paper describes a new implantable measurement system, further developed from an implantable measurement device implemented earlier at Tampere University of Technology (TUT), to assess the psychophysiological state of well-being of dairy-cattle. By measuring single-channel Electrocardiogram (ECG), body temperature and cattle activity we provide veterinarians and animal scientists with a tool to assess cattle stress levels and well-being. This information can, for example, be linked to cattle milk production. The new device processes the ECG signal in real-time to derive the heart rate along with a wireless radio frequency transmission of the data from the implant to a receiver device attached near or on the cattle. By collecting the data through a wireless link we are able to extend the recording period from three weeks of the earlier version of the device up to 3 months. The algorithm for the ECG peak detection is a modified version of the Pan-Tompkins algorithm optimized for cattle application with ECG recordings based on several hundred hours of data collected from previous experiments and recordings. The implantable system was tested with in vivo trials in April 2012.

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Harrison, C. G. A., J. C. Belshé, A. S. Dunlap, J. D. Mudie, and A. I. Rees. "A Photographic Compass Inclinometer for the Orientation of Deep Sea Sediment Samples." Marine Technology Society Journal 40, no. 2 (May 1, 2006): 13–15. http://dx.doi.org/10.4031/002533206787353484.

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An inexpensive instrument is briefly described which has been designed to provide a method of recording the orientation of deep-sea sampling devices. A compass and bull's-eye spirit level are photographed by a single shot camera shortly after the sampling device hits the bottom. The azimuth of a line on the device may be measured to within 2 degrees, and the inclination of the device to within 1/2 degree.

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Rahman, Fandisya, Achmad Basuki, and Ismiarta Aknuranda. "Pengambilan Data secara Bergerak pada Automatic Meter Reading Bertopologi Mesh." Jurnal Teknologi Informasi dan Ilmu Komputer 6, no. 1 (January 16, 2019): 1. http://dx.doi.org/10.25126/jtiik.201961695.

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<p>Proses rekapitulasi informasi mengenai kuantitas pemakaian listrik, air, dan gas dari pelanggan perusahaan penyedia utilitas umumnya tersedia melalui proses pengumpulan data secara berkala. Proses pengumpulan/pencatatan data tersebut dilakukan oleh petugas yang berkunjung ke setiap rumah-rumah pelanggan secara periodik. Banyaknya rumah yang dikunjungi menyebabkan pekerjaan mencatat data menjadi berat dan memungkinkan terjadi kesalahan pencatatan. Data yang tidak akurat berkorelasi terhadap kerugian finansial yang ditanggung perusahaan penyedia utilitas. Berbagai teknologi untuk memudahkan pencatatan seperti (Automatic Meter Reading) AMR telah diterapkan, tetapi masih memiliki permasalahan dalam proses pengiriman data dari perangkat pencatat ke pusat basis data. Penelitian ini mengusulkan pengembangan teknologi AMR dengan menerapkan mekanisme pengambilan data secara bergerak dan nirkabel dengan topologi jaringan mesh. Setiap perangkat AMR diasumsikan sebagai perangkat statis yang terhubung secara topologi jaringan mesh dengan perangkat AMR lain yang saling berdekatan dan dapat bertindak sebagai relay untuk kemudian mengirimkan data ke perangkat pencatat bergerak yang digunakan oleh petugas atau disebut perangkat Mobile Data Gathering(MDG). Perangkat pencatat MDG dapat mengumpulkan data secara bergerak mendekati salah satu perangkat AMR untuk mengumpulkan data dari seluruh perangkat AMR yang saling berdekatan. Kecepatan bergerak perangkat pencatat AMR berpengaruh dalam akurasi pencatatan dan jumlah data yang dapat dikumpulkan. Berdasarkan hasil uji simulasi dapat diketahui bahwa sistem pengumpulan data dengan mekanisme bergerak mampu mengumpulkan data dengan kecepatan terbaik 30 km/jam dengan jumlah data sebanyak 86% dari semua jumlah perangkat AMR.</p><p><em><strong>Abstract</strong></em></p><p><em>Recapitulation process information on the amount of electricity, water and gas from a utility provider of enterprise customers are generally available through periodic data gathering processes. The data gathering process mostly performed by officers who periodically visit each customers' house. The more number of houses to be visited, the heavier the workload for data recording and the recording errors may occur. Inaccurate data correlate with financial losses borne by utilities. Various techniques to facilitate the recording such as Automatic Meter Ready (AMR) have been applied, but the problem during data transmission of data from the recording device to the central database still exists. This research proposes the development of AMR technology by applying the mechanism of wireless data transfer with mesh network topology. Each AMR device is assumed static devices in a network topology connected to other AMR devices side by side and can act as a relay than the data sent to a mobile agent recording device. The AMR wireless recording device can collect data that moves closer to one of the AMR devices to collect data from all neighboring AMR devices. The speed of movement of the AMR recording device affects the accuracy of the recording and the amount of data that can be collected. The evaluation results show that the data gathering system with a movement mechanism suitable for data collection at the best speeds of 30 km/h with the successful data gathering around 86% of all AMR devices</em></p>

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Kokubo, Yuji, and Chikahiro Ohkubo. "Occlusion recording device for dental implant-supported restorations." Journal of Prosthetic Dentistry 95, no. 3 (March 2006): 262–63. http://dx.doi.org/10.1016/j.prosdent.2006.01.013.

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Watatani, Yoshizumi, and Shigeyuki Ito. "Video and sound signal recording and reproducing device." Journal of the Acoustical Society of America 78, no. 2 (August 1985): 825. http://dx.doi.org/10.1121/1.393057.

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Koyama, Motoaki. "Speech recognition LSI system including recording/reproduction device." Journal of the Acoustical Society of America 96, no. 3 (September 1994): 1950. http://dx.doi.org/10.1121/1.410193.

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Harris, Tucker M., and Parul Goyal. "Recording video endoscopy using a portable media device." Laryngoscope 119, no. 3 (March 2009): 500–501. http://dx.doi.org/10.1002/lary.20104.

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Juszkiewicz, Henry E. "Musical instrument digital recording device with communications interface." Journal of the Acoustical Society of America 115, no. 2 (2004): 462. http://dx.doi.org/10.1121/1.1669331.

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Kawamoto, Yoshinori. "Game machine audio device and information recording medium." Journal of the Acoustical Society of America 112, no. 5 (2002): 1735. http://dx.doi.org/10.1121/1.1526537.

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Bykhovsky, Dima. "Recording device identification by ENF harmonics power analysis." Forensic Science International 307 (February 2020): 110100. http://dx.doi.org/10.1016/j.forsciint.2019.110100.

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Allen, N. S., E. T. Robinson, C. M. Stott, F. F. Thompson, D. C. Dobson, and A. J. Nelson. "Photoconductivity measurement using a simulated electrostatic recording device." Journal of Photochemistry 39, no. 1 (July 1987): 165–72. http://dx.doi.org/10.1016/0047-2670(87)80014-x.

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Galashan, F. Orlando, Hanna C. Rempel, Anneke Meyer, Eva Gruber-Dujardin, Andreas K. Kreiter, and Detlef Wegener. "A new type of recording chamber with an easy-to-exchange microdrive array for chronic recordings in macaque monkeys." Journal of Neurophysiology 105, no. 6 (June 2011): 3092–105. http://dx.doi.org/10.1152/jn.00508.2010.

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In monkeys, long-term recordings with chronically implanted microelectrodes frequently suffer from a continuously decreasing probability to record single units or even small multiunit clusters. This problem is associated with two technical limitations of the available devices: first, restrictions for electrode movement, and second, absent possibility to exchange electrodes easily on a regular basis. Permitting to adjust the recording site and to use new recording tracks with proper electrodes may avoid these problems and make chronic more similar to acute recordings. Here, we describe a novel type of implant tackling this issue. It consists of a new type of recording chamber combined with an exchangeable multielectrode array that precisely fits into it. The multielectrode array is reversibly fixed to the chamber, and within a minute it can be exchanged against another array equipped with new electrodes at the awake animal. The array allows for bidirectional movement of six electrodes for a distance of up to 12 mm. The recording chamber enables hermetical isolation of the intracranial space, resulting in long-lasting aseptic conditions and reducing dural thickening to a minimum, as confirmed by microbiological and histopathological analysis. The device has a simple design and is both easy to produce and low in cost. Functionality has been tested in primary and secondary visual cortex of three macaque monkeys over a period of up to 15 mo. The results show that even after more than a year, single and multiunit responses can be obtained with high incidence.

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Wagner, Ruth Erna, Hugo Plácido da Silva, and Klaus Gramann. "Validation of a Low-Cost Electrocardiography (ECG) System for Psychophysiological Research." Sensors 21, no. 13 (June 30, 2021): 4485. http://dx.doi.org/10.3390/s21134485.

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Background and Objective: The reliability of low-cost mobile systems for recording Electrocardiographic (ECG) data is mostly unknown, posing questions regarding the quality of the recorded data and the validity of the extracted physiological parameters. The present study compared the BITalino toolkit with an established medical-grade ECG system (BrainAmp-ExG). Methods: Participants underwent simultaneous ECG recordings with the two instruments while watching pleasant and unpleasant pictures of the “International Affective Picture System” (IAPS). Common ECG parameters were extracted and compared between the two systems. The Intraclass Correlation Coefficients (ICCs) and the Bland–Altman Limits of Agreement (LoA) method served as criteria for measurement agreement. Results: All but one parameter showed an excellent agreement (>80%) between both devices in the ICC analysis. No criteria for Bland–Altman LoA and bias were found in the literature regarding ECG parameters. Conclusion: The results of the ICC and Bland–Altman methods demonstrate that the BITalino system can be considered as an equivalent recording device for stationary ECG recordings in psychophysiological experiments.

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Tseng, Yi-Li, Hung-Wei Chiu, Tsung-Hsien Lin, and Fu-Shan Jaw. "MINIATURE MODULES FOR MULTI-LEAD ECG RECORDING." Biomedical Engineering: Applications, Basis and Communications 20, no. 04 (August 2008): 219–22. http://dx.doi.org/10.4015/s1016237208000805.

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Remote monitoring systems for home health care service have become one of the hottest topics recently. Biomedical signals recorded by portable devices can be wirelessly transmitted through the Internet. In this paper, a miniature signal-condition module for ambulatory recording of electrocardiogram (ECG) signals was designed with high input impedance, high common-mode rejection ratio (CMRR), low power, appropriate amplification and filtration, and automatic suppression of offset voltage. For early detection of acute myocardial infarction (AMI), this device is extended and 12-lead ECG recording is available. Due to the modular approach, the module is accommodated for other biomedical signals recording as well if the gain and pass-band of the module are modified.

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Arakcheev, P. V., E. V. Buryi, and D. A. Semerenko. "A Device for Recording TV Images with High Intensity Resolution and Stroboscopic Recording Mode." Instruments and Experimental Techniques 62, no. 1 (January 2019): 22–25. http://dx.doi.org/10.1134/s0020441218060179.

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Hinck, Glori, and Thomas F. Bergmann. "Video capture on student-owned mobile devices to facilitate psychomotor skills acquisition: A feasibility study." Journal of Chiropractic Education 27, no. 2 (September 1, 2013): 158–62. http://dx.doi.org/10.7899/jce-13-12.

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Objective We evaluated the feasibility of using mobile device technology to allow students to record their own psychomotor skills so that these recordings can be used for self-reflection and formative evaluation. Methods Students were given the choice of using DVD recorders, zip drive video capture equipment, or their personal mobile phone, device, or digital camera to record specific psychomotor skills. During the last week of the term, they were asked to complete a 9-question survey regarding their recording experience, including details of mobile phone ownership, technology preferences, technical difficulties, and satisfaction with the recording experience and video critique process. Results Of those completing the survey, 83% currently owned a mobile phone with video capability. Of the mobile phone owners 62% reported having email capability on their phone and that they could transfer their video recording successfully to their computer, making it available for upload to the learning management system. Viewing the video recording of the psychomotor skill was valuable to 88% of respondents. Conclusions Our results suggest that mobile phones are a viable technology to use for the video capture and critique of psychomotor skills, as most students own this technology and their satisfaction with this method is high.

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Rogers, Bruce, David Giles, Nick Draper, Laurent Mourot, and Thomas Gronwald. "Influence of Artefact Correction and Recording Device Type on the Practical Application of a Non-Linear Heart Rate Variability Biomarker for Aerobic Threshold Determination." Sensors 21, no. 3 (January 26, 2021): 821. http://dx.doi.org/10.3390/s21030821.

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Recent study points to the value of a non-linear heart rate variability (HRV) biomarker using detrended fluctuation analysis (DFA a1) for aerobic threshold determination (HRVT). Significance of recording artefact, correction methods and device bias on DFA a1 during exercise and HRVT is unclear. Gas exchange and HRV data were obtained from 17 participants during an incremental treadmill run using both ECG and Polar H7 as recording devices. First, artefacts were randomly placed in the ECG time series to equal 1, 3 and 6% missed beats with correction by Kubios software’s automatic and medium threshold method. Based on linear regression, Bland Altman analysis and Wilcoxon paired testing, there was bias present with increasing artefact quantity. Regardless of artefact correction method, 1 to 3% missed beat artefact introduced small but discernible bias in raw DFA a1 measurements. At 6% artefact using medium correction, proportional bias was found (maximum 19%). Despite this bias, the mean HRVT determination was within 1 bpm across all artefact levels and correction modalities. Second, the HRVT ascertained from synchronous ECG vs. Polar H7 recordings did show an average bias of minus 4 bpm. Polar H7 results suggest that device related bias is possible but in the reverse direction as artefact related bias.

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Janky, Kristen L., Jessie N. Patterson, Neil T. Shepard, Megan L. A. Thomas, and Julie A. Honaker. "Effects of Device on Video Head Impulse Test (vHIT) Gain." Journal of the American Academy of Audiology 28, no. 09 (October 2017): 778–85. http://dx.doi.org/10.3766/jaaa.16138.

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AbstractNumerous video head impulse test (vHIT) devices are available commercially; however, gain is not calculated uniformly. An evaluation of these devices/algorithms in healthy controls and patients with vestibular loss is necessary for comparing and synthesizing work that utilizes different devices and gain calculations.Using three commercially available vHIT devices/algorithms, the purpose of the present study was to compare: (1) horizontal canal vHIT gain among devices/algorithms in normal control subjects; (2) the effects of age on vHIT gain for each device/algorithm in normal control subjects; and (3) the clinical performance of horizontal canal vHIT gain between devices/algorithms for differentiating normal versus abnormal vestibular function.Prospective.Sixty-one normal control adult subjects (range 20–78) and eleven adults with unilateral or bilateral vestibular loss (range 32–79).vHIT was administered using three different devices/algorithms, randomized in order, for each subject on the same day: (1) Impulse (Otometrics, Schaumberg, IL; monocular eye recording, right eye only; using area under the curve gain), (2) EyeSeeCam (Interacoustics, Denmark; monocular eye recording, left eye only; using instantaneous gain), and (3) VisualEyes (MicroMedical, Chatham, IL, binocular eye recording; using position gain).There was a significant mean difference in vHIT gain among devices/algorithms for both the normal control and vestibular loss groups. vHIT gain was significantly larger in the ipsilateral direction of the eye used to measure gain; however, in spite of the significant mean differences in vHIT gain among devices/algorithms and the significant directional bias, classification of “normal” versus “abnormal” gain is consistent across all compared devices/algorithms, with the exception of instantaneous gain at 40 msec. There was not an effect of age on vHIT gain up to 78 years regardless of the device/algorithm.These findings support that vHIT gain is significantly different between devices/algorithms, suggesting that care should be taken when making direct comparisons of absolute gain values between devices/algorithms.

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