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Artykuły w czasopismach na temat "Pattern Reversal Visual Evoked Potential"

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Terracciano, Rossana, Alessandro Sanginario, Simona Barbero, Davide Putignano, Lorenzo Canavese, and Danilo Demarchi. "Pattern-Reversal Visual Evoked Potential on Smart Glasses." IEEE Journal of Biomedical and Health Informatics 24, no. 1 (2020): 226–34. http://dx.doi.org/10.1109/jbhi.2019.2899774.

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Taddei, Francesco, Maria Pia Viggiano, and Luciano Mecacci. "Pattern reversal visual evoked potentials in fencers." International Journal of Psychophysiology 11, no. 3 (1991): 257–60. http://dx.doi.org/10.1016/0167-8760(91)90019-t.

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Giovannini, M., R. Valsasina, R. Villani, et al. "Pattern reversal visual evoked potentials in phenylketonuria." Journal of Inherited Metabolic Disease 11, no. 4 (1988): 416–21. http://dx.doi.org/10.1007/bf01800430.

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Mermeklieva, Elena A. "Reference values of pattern reversal visual evoked potentials in Bulgarian population." European Journal of Ophthalmology 29, no. 6 (2018): 600–605. http://dx.doi.org/10.1177/1120672118802545.

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Aims: The aim of this study is to evaluate pattern visual evoked potentials as an objective electrophysiological method and to create reference values for Bulgarian population. Methods and Materials: Standardized four-channel equipment ‘Neuro-MEP 4’ produced by ‘Neurosoft’ Company was used. A group of 47 healthy individuals (94 eyes) was studied. The stimulation was monocular, with a contrast-reversing pattern from black to white and vice versa. The investigation was performed with a three-channel recording with equipment adjustments according to the latest published ISCEV standard for pattern
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Dhanesha, U. "The visual evoked subcortical potential to pattern-reversal stimulation." Ophthalmic and Physiological Optics 6, no. 2 (1986): 247–48. http://dx.doi.org/10.1016/0275-5408(86)90034-7.

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Sawaya, R. A., and R. S. Haddad. "Effect of cataract on pattern reversal visual evoked potential." Annals of Ophthalmology 34, no. 4 (2002): 190–93. http://dx.doi.org/10.1007/s12009-002-0074-9.

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Harding, G. F. A., and U. Dhanesha. "The visual evoked subcortical potential to pattern reversal stimulation." Electroencephalography and Clinical Neurophysiology 61, no. 3 (1985): S136. http://dx.doi.org/10.1016/0013-4694(85)90531-0.

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JAMES, ANDREW C., RASA RUSECKAITE, and TED MADDESS. "Effect of temporal sparseness and dichoptic presentation on multifocal visual evoked potentials." Visual Neuroscience 22, no. 1 (2005): 45–54. http://dx.doi.org/10.1017/s0952523805221053.

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Multifocal VEP (mfVEP) responses were obtained from 13 normal human subjects for nine test conditions, covering three viewing conditions (dichoptic and left and right monocular), and three different temporal stimulation forms (rapid contrast reversal, rapid pattern pulse presentation, and slow pattern pulse presentation). The rapid contrast reversal stimulus had pseudorandomized reversals of checkerboards in each visual field region at a mean rate of 25 reversals/s, similar to most mfVEP studies to date. The rapid pattern pulse presentation had pseudorandomized presentations of a checkerboard
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Kakigi, R., S. Oono, Y. Matsuda, and Y. Kuroda. "Pattern-reversal visual evoked potentials in Down's syndrome." Acta Neurologica Scandinavica 87, no. 5 (2009): 410–15. http://dx.doi.org/10.1111/j.1600-0404.1993.tb04126.x.

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Tobimatsu, S. "Neural generators of pattern reversal visual evoked potentials." Electroencephalography and Clinical Neurophysiology 103, no. 1 (1997): 145. http://dx.doi.org/10.1016/s0013-4694(97)88659-6.

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Rozprawy doktorskie na temat "Pattern Reversal Visual Evoked Potential"

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Shawkat, Fatima Suham. "Pattern visual evoked potentials : comparison of onset, reversal and offset components." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266482.

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Bergkvist, Linn. "Visual Evoked Potentials : Referensvärden och könsskillnader." Thesis, Umeå universitet, Biomedicinsk laboratorievetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171567.

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Beneish, Raquel Gabriela. "Pattern reversal visual evoked potentials in children with strabismic and with anisometropic amblyopia." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61883.

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Padhiar, Sanjita. "Study of the cholinergic factors affecting the flash and pattern reversal visual evoked potentials." Thesis, Aston University, 1993. http://publications.aston.ac.uk/14601/.

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The effects of cholinergic agents undergoing clinical trials for the treatment of Alzheimer's disease and the anticholinergic agent scopolamine, were investigated on the components of the flash and pattern reversal visual evoked potentials (VEPs) in young healthy volunteers. The effect of recording the flash and pattern reversal VEPs for 13 hours in 5 healthy male volunteers, revealed no statistically significant change in the latency or amplitude measures. Administration of the muscarinic agonist SDZ 210-086 to 16 healthy male volunteers resulted in the reduction of the flash N2-P2 and patter
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Lee, Jin. "How fast can we see? : the latency development in human infants to pattern, orientation, and direction-reversal visual evoked potentials." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:09c7d3e8-7031-43e4-b03a-fe2dba219ceb.

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The goal of this thesis is to track latency changes in three visual evoked potentials (VEP) stimuli as an indication of overall brain development, in order to provide a normative baseline to differentiate visual and neurological development from pathological processes. VEP- neural electrical activity recorded from the scalp surface and synchronized with visual stimulus transitions- is one of the common techniques in understanding infant vision development. Past work has concentrated on responses to pattern reversal and to the latency of the initial positive peak. Here we compare the timing of
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Slaven, Antoinette. "Visual evoked magnetic responses (VEMR) to flash and pattern reversal stimulation." Thesis, Aston University, 1992. http://publications.aston.ac.uk/14634/.

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The problems of using a single channel magnetometer (BTi, Model 601) in an unshielded clinical environment to measure visual evoked magnetic responses (VEMR) were studied. VEMR to flash and pattern reversal stimuli were measured in 100 normal subjects. Two components, the P100M to pattern reversal and P2M to flash, were measured successfully in the majority of patients. The mean latencies of these components in different decades of life were more variable than the visual evoked potentials (VEP) that have been recorded these stimuli. The latency of the P100M appeared to increase significantly a
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Hashimoto, Tadashi. "Temporal profile of visual evoked responses to pattern reversal stimulation analyzed with whole-head magnetometer." Kyoto University, 1999. http://hdl.handle.net/2433/181243.

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Książki na temat "Pattern Reversal Visual Evoked Potential"

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Padhiar, Sanjita. Study of the cholinergic factors affecting the flash and pattern reversal visual evoked potentials. Aston University. Department of Vision Sciences, 1993.

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Slaven, Antoinette. Visual evoked magnetic responses (VEMR) to flash and pattern reversal stimulation. Aston University. Department of Vision Sciences, 1992.

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Buchner, Helmut. Evoked potentials. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199688395.003.0015.

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Evoked potentials (EPs) occur in the peripheral and the central nervous system. The low amplitude signals are extracted from noise by averaging multiple time epochs time-locked to a sensory stimulus. The mechanisms of generation, the techniques for stimulation and recording are established. Clinical applications provide robust information to various questions. The importance of EPs is to measure precisely the conduction times within the stimulated sensory system. Visual evoked potentials to a pattern reversal checker board stimulus are commonly used to evaluate the optic nerve. Auditory evoked
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Spileers, W. A Study of the Neuronal Characteristics of Pattern Reversal Visual Evoked Cortical Potentials, with Special Focus on Contrast Modulated Steady State Visual Evoked Potentials. Leuven University Press, 1991.

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Części książek na temat "Pattern Reversal Visual Evoked Potential"

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Shushtarian, S. M., P. Valiollahi, and A. Yahyabek. "Effect of Distance between Monitor & Patient in Recording Visual Evoked Potential Using Pattern Reversal Checker Board Stimulation." In IFMBE Proceedings. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03885-3_239.

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Hatanaka, K., K. Seki, N. Nakasato, et al. "Effect of Color on Visual Evoked Magnetic Fields with Pattern-Reversal Stimulation." In Biomag 96. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1260-7_188.

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Seki, K., N. Nakasato, S. Fujita, et al. "Visual Evoked Fields for Pattern Reversal Stimuli in Patients with Occipital Lobe Lesions." In Biomag 96. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1260-7_260.

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Wenzel, D., U. Brandl, and E. Kraus-Mackiw. "Topographic Brain Mapping and Conventional Evoked Potential to Checkerboard Reversal and Semantic Visual Stimulation in a Dyslexic Boy with Amblyopia." In Topographic Brain Mapping of EEG and Evoked Potentials. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-72658-3_18.

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Guidi, M., O. Scarpino, F. Angeleri, and R. G. Bickford. "N100 Frontal Component and Influence of Reference Location in Pattern Visual Evoked Potential Studied with the Area Display Technique." In Topographic Brain Mapping of EEG and Evoked Potentials. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-72658-3_41.

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Abe, H., S. Hasegawa, and K. Iwata. "Assessment of Spatial and Temporal Modulation Transfer Functions in Early Glaucoma by Means of the Pattern Visual Evoked Potential." In Glaucoma Update IV. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76084-6_23.

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Hayashi, Hidehiko, and Akinori Minazuki. "Study on Image Quality Assessment with Scale Space Approach Using Index of Visual Evoked Potentials." In E-Activity and Intelligent Web Construction. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-61520-871-5.ch014.

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This chapter presents an objective assessment method of image quality using visual evoked potentials (VEPs) to image engineer field based on multi-disciplinarily approach such as knowledge of neurobiology, image recognition theory, or computer vision. The multi-disciplinarily based objective assessment method applies Gaussian scale-space filtering in order to define a scalar parameter to depict blur image. In the experiment, visual stimuli are provided by the scalar parameter, and subjects are detected using VEPs. Their VEPs are recoded during observation of the checkerboard pattern reversal (
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"Aging and Pattern Visual Evoked Cortical Potential." In Principles and Practice of Clinical Electrophysiology of Vision. The MIT Press, 2006. http://dx.doi.org/10.7551/mitpress/5557.003.0038.

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Streszczenia konferencji na temat "Pattern Reversal Visual Evoked Potential"

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Van Toi, Vo, and Sun Jianguo. "VEPs Generated by High Rates Pattern Reversal Stimulation." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/navs.1990.we6.

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The effect of high modulation rate on pattern reversal visual evoked potentials (VEP) has not been well explored and no general agreement has been reached. Regan (1978) found that patterned VEPs occurred only at low temporal frequencies up to approximately 30 reversals per second (r/s) i.e 15 Hz. After that, the VEPs fall off sharply as frequency increases. By contrast, Tyler et al. (1980) found VEP responses, with signal-to-noise ratios of about 2:1, up to 90 r/s i.e 45 Hz. Moreover, it is recognized that unpatterned flicker stimuli over 60 Hz still elicited VEPs.
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Johnson, Mary A., and Neil R. Miller. "Visual Evoked Potential Tuning Functions in Optic Neuritis and Optic Neuropathy." In Noninvasive Assessment of Visual Function. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/navf.1985.wb3.

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The pattern-reversal visual evoked potential (VEP) is a sensitive measure of lesions of the anterior visual pathway; the VEP exhibits characteristic changes in idiopathic optic neuritis, optic neuritis associated with multiple sclerosis, ischemic optic neuropathy, compressive neuropathy, amblyopia and other disorders. It has been suggested that one can differentiate among optic neuritis, ischemic optic neuropathy and compressive optic neuropathy on the basis of latency and amplitude changes.1,2 Sometimes these differences are compelling. P1 latency delays in optic neuritis have been reported t
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Orel-Bixler, Deborah A., A. M. Norcia, and Smith-Kettlewell. "Differential Growth in Acuity for Pattern Reversal and Pattern Onset-Offset Targets." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/navs.1986.mb4.

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The Visual Evoked Potential (VEP) has been used by a number of investigators for non-invasive assessment of the development of visual acuity in human infants. In all these studies, visual acuity develops to near adult levels during the first year of life. Close inspection of these growth curves reveals an interesting difference in the apparent rate of acuity development during the first year. Data from studies which have used the pattern onset/offset mode of stimulus presentation (Marg et. al., 1976; de Vries-Khoe and Spekreijse, 1982) indicate that acuity develops rapidly at a rate of 0.5 oct
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Terracciano, Rossana, Alessandro Sanginario, Luana Puleo, and Danilo Demarchi. "Live Demonstration: Smart Glasses-based Portable System for Pattern-Reversal Visual Evoked Potential clinical evaluations." In 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE, 2019. http://dx.doi.org/10.1109/biocas.2019.8919182.

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Rovamo, Jyrki, and Veijo Virsu. "Role of retinal ganglion-cell density and receptive-field size in spatial vision." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.thf3.

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In human photopic vision the number of ganglion cells analyzing one solid degree of visual field decreases toward the retinal periphery. When the decrease is compensated by magnifying the gratings in inverse proportion to ganglion-cell density (M-scaling) contrast sensitivity becomes independent of eccentricity.1 M-scaling also applies, for example, to color discrimination, tilt aftereffect, pattern-reversal evoked potentials, Panum's area, and oscillatory movement hyperacuity. M-scaling does not, however, compensate for the increase in size and decrease in overlap of ganglion-cell receptive f
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Previc, Fred H. "Frequency-Doubling in the Visual Evoked Potential: Implications for Assessment of Spatiotemporal Vision." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/navs.1987.mc1.

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Several investigators have noted that the suprathreshold visual evoked potential (VEP) characterizes spatiotemporal tuning in primates in different ways than do psychophysical measures. In particular, narrow spatial and temporal tuning (often surrounding multiple peaks) have frequently been observed (1), and in many cases, the peak of the spatial tuning function is higher than predicted behaviorally. One of the most intriguing aspects of the suprathreshold VEP is the frequency-doubling (i.e., predominance of power at twice the reversal frequency) which is observed when sinusoidal luminance-con
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Katsumi, Osamu, Tatsuo Hirose, and Mehul C. Mehta. "Measuring Visual Function in Infants and Young Children with Visual Impairment." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/navs.1990.ma5.

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For evaluating vision in infants and young children, optokinetic nystagmus (OKN), preferential looking (PL), and pattern reversal visual evoked response (PVER) are now available. Each method has its own advantages and disadvantages, as has been extensively reported elsewhere (1), and their use has resulted in a much clearer understanding of the overall pattern of visual development during childhood.
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Eriksen, K. Jeffrey, Kenneth W. Wright, Tracey J. Shors, and James P. Ary. "Pattern Visual Evoked Potentials Recorded Under Chloral Hydrate Sedation." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/navs.1986.md1.

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The accurate assessment of visual function in infants and preverbal children is crucial to the appropriate management of pediatric eye disorders. Decisions regarding pediatric cataract surgery, corneal surgery, the dispensing of glasses, and patching therapy are dependent upon knowledge of visual function and the presence of amblyopia. Unfortunately, there are only a few quantitative methods available to test infant vision and these have not been accepted for routine clinical use [1,2]. The two most widely used methods are preferential looking [3,4] and the pattern visual evoked potential (P-V
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Rakshit, Arnab, Susenjit Ghosh, Amit Konar, and Monalisa Pal. "A Novel Hybrid Brain-Computer Interface for Robot Arm manipulation using Visual Evoked Potential." In 2017 Ninth International Conference on Advances in Pattern Recognition (ICAPR). IEEE, 2017. http://dx.doi.org/10.1109/icapr.2017.8593034.

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Tobimatsu, S., G. G. Celesia, and S. Cone. "Pattern-ERG to alternating checks in cats: evidence of retinal spatial frequency tuning, and effect of optic nerve section." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/navs.1988.wb1.

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Pattern-ERG (P-ERG) is evoked by pattern-reversal stimuli, where the pattern alternates, while the mean luminance is kept constant. P-ERG evaluates primarily the function of the retina serving the central visual field and mostly the macular region (2,5,7,9,11-13,17). In 1981 Maffei and Fiorentini studied P-ERG in cats and demonstrated that the P-ERG disappeared after section of the optic nerve. They correlated the abolition of the P-ERG with retrograde degeneration of the ganglion cells. These and other studies (7,12-13) suggest that the P-ERG originates in ganglion cells. On the other hand, d
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Raporty organizacyjne na temat "Pattern Reversal Visual Evoked Potential"

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Mermeklieva, Elena. Reference Values of Binocular Pattern Reversal Visual Evoked Potentials in Bulgarian Population. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.11.17.

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