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Relevant bibliographies by topics / Theta/beta ratios

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Academic literature on the topic 'Theta/beta ratios'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Theta/beta ratios"

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Sokhadze, E. M., B. Hillard, M. Eng, A. S. El-Baz, A. Tasman, and L. Sears. "ELECTROENCEPHALOGRAPHIC BIOFEEDBACK IMPROVES FOCUSED ATTENTION IN ATTENTION DEFICIT/HYPERACTIVITY DISORDER." Bulletin of Siberian Medicine 12, no. 2 (2013): 182–94. http://dx.doi.org/10.20538/1682-0363-2013-2-182-194.

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EEG biofeedback (so called neurofeedback) is considered as an efficacious treatment for ADHD. We propose that operant conditioning of EEG in neurofeedback training mode, aimed to mitigate inattention and low arousal in ADHD, will be accompanied by changes in EEG bands' relative power. Patients were 18 children diagnosed with ADHD. The neurofeedback protocol (“Focus/Alertness” by Peak Achievement Trainer, Neurotek, KY) used to train patients has focused attention training procedure, which according to specifications, represents wide band EEG amplitude suppression training. Quantitative EEG anal

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Alahmadi, Nsreen. "Classifying Children with Learning Disabilities on the Basis of Resting State EEG Measures Using a Linear Discriminant Analysis." Zeitschrift für Neuropsychologie 26, no. 4 (2015): 249–56. http://dx.doi.org/10.1024/1016-264x/a000161.

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Abstract. This study examines the usefulness of easy to obtain EEG measures to discriminate learning-disabled children (LD) from healthy control children. Here the spectral power in the delta, theta, alpha, and beta EEG bands and various power ratios (theta/alpha, theta/beta, beta/alpha, beta/theta, beta/[alpha+theta], [delta+theta]/alpha, alpha/delta, and [theta+alpha]/beta) are applied. These measures were subjected to a factor analysis with varimax rotation revealing four factors explaining 90 % of the entire variance. Factor 1 represents the power of the slow EEG frequency bands delta and

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Sari Gokten, Emel, Emine Elif Tulay, Birsu Beser, et al. "Predictive Value of Slow and Fast EEG Oscillations for Methylphenidate Response in ADHD." Clinical EEG and Neuroscience 50, no. 5 (2019): 332–38. http://dx.doi.org/10.1177/1550059419863206.

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Attention-deficit/hyperactivity disorder (ADHD) is the most common neurodevelopmental disorder and is characterized by symptoms of inattention and/or hyperactivity and impulsivity. In the current study, we obtained quantitative EEG (QEEG) recordings of 51 children aged between 6 and 12 years before the initiation of methylphenidate treatment. The relationship between changes in the scores of ADHD symptoms and initial QEEG features (power/power ratios values) were assessed. In addition, the children were classified as responder and nonresponder according to the ratio of their response to the me

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Abdelfattah, Sherif M., Kathryn E. Merrick, and Hussein A. Abbass. "Theta-Beta Ratios Are Prominent EEG Features for Visual Tracking Tasks." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 60, no. 1 (2016): 21–25. http://dx.doi.org/10.1177/1541931213601005.

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Yi Wen, Tee, and Siti Armiza Mohd Aris. "Electroencephalogram (EEG) stress analysis on alpha/beta ratio and theta/beta ratio." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 1 (2020): 175. http://dx.doi.org/10.11591/ijeecs.v17.i1.pp175-182.

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<span>This paper presents an analysis of stress feature using the power ratio of frequency bands including Alpha to Beta and Theta to Beta. In this study, electroencephalography (EEG) acquisition tool was utilized to collect brain signals from 40 subjects and objectively reflected stress features induced by virtual reality (VR) technology. The EEG signals were analyzed using Welch’s fast Fourier transform (FFT) to extract power spectral density (PSD) features which represented the power of a signal distributed over a range of frequencies. Slow wave versus fast wave (SW/FW) of EEG has bee

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Huang, Ching-Wen, Chung-Ju Huang, Chiao-Ling Hung, Chia-Hao Shih, and Tsung-Min Hung. "Physical Fitness and Resting EEG in Children With Attention Deficit Hyperactivity Disorder." Journal of Psychophysiology 29, no. 1 (2015): 26–32. http://dx.doi.org/10.1027/0269-8803/a000131.

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Children with attention deficit hyperactivity disorder (ADHD) are characterized by a deviant pattern of brain oscillations during resting state, particularly elevated theta power and increased theta/alpha and theta/beta ratios that are related to cognitive functioning. Physical fitness has been found beneficial to cognitive performance in a wide age population. The purpose of the present study was to investigate the relationship between physical fitness and resting-state electroencephalographic (EEG) oscillations in children with ADHD. EEG was recorded during eyes-open resting for 28 children

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van Dijk, Hanneke, Roger deBeus, Cynthia Kerson, et al. "Different Spectral Analysis Methods for the Theta/Beta Ratio Calculate Different Ratios But Do Not Distinguish ADHD from Controls." Applied Psychophysiology and Biofeedback 45, no. 3 (2020): 165–73. http://dx.doi.org/10.1007/s10484-020-09471-2.

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Abstract There has been ongoing research on the ratio of theta to beta power (Theta/Beta Ratio, TBR) as an EEG-based test in the diagnosis of ADHD. Earlier studies reported significant TBR differences between patients with ADHD and controls. However, a recent meta-analysis revealed a marked decline of effect size for the difference in TBR between ADHD and controls for studies published in the past decade. Here, we test if differences in EEG processing explain the heterogeneity of findings. We analyzed EEG data from two multi-center clinical studies. Five different EEG signal processing algorit

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Wischnewski, Miles, Mie L. Joergensen, Boukje Compen, and Dennis J. L. G. Schutter. "Frontal Beta Transcranial Alternating Current Stimulation Improves Reversal Learning." Cerebral Cortex 30, no. 5 (2020): 3286–95. http://dx.doi.org/10.1093/cercor/bhz309.

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Abstract Electroencephalogram (EEG) studies suggest an association between beta (13–30 Hz) power and reversal learning performance. In search for direct evidence concerning the involvement of beta oscillations in reversal learning, transcranial alternating current stimulation (tACS) was applied in a double-blind, sham-controlled and between-subjects design. Exogenous oscillatory currents were administered bilaterally to the frontal cortex at 20 Hz with an intensity of 1 mA peak-to-peak and the effects on reward-punishment based reversal learning were evaluated in hundred-and-eight healthy volu

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Fernández, T., W. Herrera, T. Harmony, et al. "EEG and Behavioral Changes following Neurofeedback Treatment in Learning Disabled Children." Clinical Electroencephalography 34, no. 3 (2003): 145–52. http://dx.doi.org/10.1177/155005940303400308.

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Neurofeedback (NFB) is an operant conditioning procedure, by which the subject learns to control his/her EEG activity. On one hand, Learning Disabled (LD) children have higher values of theta EEG absolute and relative power than normal children, and on the other hand, it has been shown that minimum alpha absolute power is necessary for adequate performance. Ten LD children were selected with higher than normal ratios of theta to alpha absolute power (theta/alpha). The Test Of Variables of Attention (TOVA) was applied. Children were divided into two groups in order to maintain similar IQ values

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Guner, Derya, Bedile Irem Tiftikcioglu, Nilgun Tuncay, and Yasar Zorlu. "Contribution of Quantitative EEG to the Diagnosis of Early Cognitive Impairment in Patients With Idiopathic Parkinson’s Disease." Clinical EEG and Neuroscience 48, no. 5 (2016): 348–54. http://dx.doi.org/10.1177/1550059416662412.

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Cognitive dysfunction can emerge during the clinical course of Parkinson’s disease (PD) even beginning in early stages, which requires extended neuropsychological tests for diagnosis. There is need for rapid, feasible, and practical tests in clinical practice to diagnose and monitor the patients without causing any discomfort. We investigated the utility of quantitative analysis of digital EEG (qEEG) for diagnosing subtle cognitive impairment in PD patients without evident cognitive deficits (ie, “normal cognition”). We enrolled 45 patients with PD and age- matched 39 healthy controls in the s

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Dissertations / Theses on the topic "Theta/beta ratios"

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Negrao, Bianca Lee. "Autonomic correlates at rest and during evoked attention in children with attention-deficit/hyperactivity disorder and effects of sympathomimetic medication." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-07072009-163036/.

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Lefevre, Laura. "Importance des modifications de flairage dans l’acquisition d’une tâche de discrimination olfactive : approche comportementale et corrélats neuronaux." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1314.

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Les modalités sensorielles ont un rôle essentiel dans la collecte des informations en provenance de l’environnement. En olfaction, l’échantillonnage actif des odeurs se fait via le flairage chez le rat (2-10 Hz). Chez l’animal qui se comporte, le flairage est un acte très dynamique, il varie en particulier en fréquence et en débit. Le flairage peut être modulé par des facteurs liés au stimulus, comme les propriétés physico-chimiques des odeurs ou leur concentration, ou par des facteurs plus « internes » comme l’attention, les émotions ou la motivation. Plusieurs auteurs ont également suggéré l

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Marlats, Fabienne. "Effets différentiels d'un entraînement neurofeedback électroencéphalographique auprès de personnes âgées avec MCI EEG neurofeedback training in elderly with mild cognitive impairment: A feasibility study SMR/theta neurofeedback training improves cognitive performance and EEG activity in elderly with mild cognitive impairment: A pilot study Comparison of effects between SMR/delta-ratio and beta1/theta-ratio neurofeedback training for older adults with mild cognitive impairment: a protocol for a randomized controlled trial." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCB045.

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Le neurofeedback électroencéphalographique ( NF EEG) est une technique d'apprentissage de l'auto-régulation de l'activité électrique cérébrale. Un patient reçoit des informations sur son activité cérébrale en temps réel qu'il peut modifier grâce à la mobilisation de capacités attentionnelles et d'un certain état de vigilance. Les études portant sur les effets du NF sur les troubles cognitifs liés au vieillissement sont récentes. Le champ d'application du NF en gérontologie se développe rapidement auprès des personnes avec troubles cognitifs légers (ou Mild Cognitive Impairment-MCI) et avec la

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Books on the topic "Theta/beta ratios"

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Holtmann, Martin, Björn Albrecht, and Daniel Brandeis. Neurofeedback. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198739258.003.0039.

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Neurofeedback of specific brain activity patterns allows perceiving and learning to gain control over these otherwise unaware neuronal processes. Neurofeedback may improve underlying neuronal deficits, and/or establish more general self-regulatory skills for compensating behavioural difficulties in other domains. Treating ADHD is the most common clinical neurofeedback application. Standard neurofeedback protocols based on electroencephalography train self-regulation of oscillatory activity in certain frequency bands (targeting theta/beta ratio) or slow cortical potential shifts. Both protocols

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Book chapters on the topic "Theta/beta ratios"

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Grossberg, Stephen. "Learning Maps to Navigate Space." In Conscious Mind, Resonant Brain. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190070557.003.0016.

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This chapter explains how humans and other animals learn to learn to navigate in space. Both reaching and route-based navigation use difference vector computations. Route navigation learns a labeled graph of angles and distances moved. Spatial navigation requires neurons to learn navigable spaces that can be many meters in size. This is again accomplished by a spectrum of cells. Such spectral spacing supports learning of medial entorhinal grid cells and hippocampal place cells. The model responds to realistic rat navigational trajectories by learning grid cells with hexagonal grid firing fields of multiple spatial scales, and place cells with one or more firing fields, that match neurophysiological data about their development in juvenile rats. Both grid and place cells develop in a hierarchy of self-organizing maps by detecting, learning and remembering the most frequent and energetic co-occurrences of their inputs. Model parsimonious properties include: similar ring attractor mechanisms process linear and angular path integration inputs that drive map learning; the same self-organizing map mechanisms can learn both grid cell and place cell receptive fields; and the learning of the dorsoventral organization of multiple grid cell modules through medial entorhinal cortex to hippocampus uses a gradient of rates that is homologous to a rate gradient that drives adaptively timed learning at multiple rates through lateral entorhinal cortex to hippocampus (‘neural relativity’). The model clarifies how top-down hippocampal-to-entorhinal ART attentional mechanisms stabilize map learning, simulates how hippocampal, septal, or acetylcholine inactivation disrupts grid cells, and explains data about theta, beta and gamma oscillations.

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Conference papers on the topic "Theta/beta ratios"

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Al-Ezzi, Abdulhakim, Nidal Kamel, Ibrahima Faye, and Esther Gunaseli M. Ebenezer. "EEG Frontal Theta-Beta Ratio and Frontal Midline Theta for the Assessment of Social Anxiety Disorder." In 2020 10th IEEE International Conference on Control System, Computing and Engineering (ICCSCE). IEEE, 2020. http://dx.doi.org/10.1109/iccsce50387.2020.9204923.

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Limin Yang, Wenya Nan, Xiaoting Qu, et al. "Beta/theta ratio neurofeedback training effects on the spectral topography of EEG." In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7319453.

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Marcano, Juan L. Lopez, Martha Ann Bell, and A. A. Louis Beex. "Classification of ADHD and Non-ADHD using theta/beta power ratio features." In 2017 IEEE EMBS International Conference on Biomedical & Health Informatics (BHI). IEEE, 2017. http://dx.doi.org/10.1109/bhi.2017.7897276.

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Evangelina Herrán-Paz, María, Raúl Ortiz-Monasterio, Antonio Rodríguez-Díaz, Olivia Mendoza, Juan R. Castro, and Hector J. Willys. "The Theta/Beta Ratio as an Indicator of Evolution in Pediatric Patients Treated for Attention-Deficit/Hyperactivity Disorder (ADHD) - A Retrospective Study." In International Conference on Bio-inspired Systems and Signal Processing. SCITEPRESS - Science and and Technology Publications, 2015. http://dx.doi.org/10.5220/0005268502770282.

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Murakami, Takahiro, Yasumi Ukida, Masami Fujii, Michiyasu Suzuki, and Takashi Saito. "Study on Detection of Epileptic Discharges Based on a Duffing Oscillator Model." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38107.

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In order to establish a quantitative detection method for appearance in epileptic discharges (EDs), we propose using the model parameters in a Duffing oscillator, which is a nonlinear mathematical model. Extracting four frequency bands of delta, theta, alpha and beta waves from the time history of the electrocorticogram (ECoG) obtained from rats with induced EDs, we applied a sweep window to the time history for each band. So as to fit the equation for the Duffing oscillator to the time history of the ECoG, we used the least square method to determine the model parameters expressing characteri

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