Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"beta band"”.
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Explorations of beta-band neural oscillations during language comprehension: Sentence processing and beyond
Contains fulltext : 168943.pdf (Publisher’s version ) (Open Access)
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Analysis of beta-band MEG coherence in ASD during direct gaze processing: Relationship to social cognition
Gaze-following is a rudimentary behavior that forms the foundation of social communication, where aberrant social orienting is a defining feature of Autism Spectrum Disorders (ASD; Hoehl et al., 2009; Nummenmaa & Cal der, 2009). Recent neuroimaging research has demonstrated increasing precision at …
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The Autoionization of The Beta Center and The Fine Structure of The Beta-Band in Sodium-Chloride
Made available in DSpace on 2015-05-12T17:12:07Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0025220.PDF: 2936906 bytes, checksum: 70166b540e81cf63427dc0134112814f (MD5) Previous issue date: 1957
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Development of Brain Computer Interface (BCI) system for integration with Functional Electrical Stimulation (FES) application
… using Electroencephalography (EEG) system for beta wave. PowerLab 8/35 and Dual Bio Amp as the detector signal the brain that will be used in this study. While, for analyze the offline data, LabChart and Matlab software was used but Digital Filter was used to extract the data. Values from …
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Investigating neural mechanisms of hand movements in virtual reality
… four conditions, pronounced decrease in power of beta-band activity relative to reference was observed during movement planning and execution in C3 and C4 electrodes (bilateral primary motor cortex). Moreover, MVF reduced inter-hemispheric differences in beta-band power during movement preparation …
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EEG signal classification for wheelchair control application
… Transform (FFT). This project used alpha and beta band to collect the data. The analysis have made based on the peak and average value which then be compared to define the most significant differentiation between signals. From the result, shows that the visible colour model meet the most …
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Chronic Monitoring and Longitudinal Efficacy of Neuromodulation for Neurological Movement Disorders
… essential tremor symptoms. We also show that the beta band biomarker used to decode movement is sufficiently stable over time fo the aDBS paradgim to remain effective for many months. In a second implementation focused on live distributed data collection we demonstrate our framework for optimizing …
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The Role of Gamma Oscillations and Cortical Inhibition In The Development of Working Memory In Adolescence
… was to evaluate the role of cortical gamma-band (> 30 Hz) oscillations—which are associated with working memory in adults—for the development of working memory capacity in adolescents, and to identify the extent to which the temporal profile of gamma-aminobutyric acid (GABA)-mediated …
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Investigation of differences in cortical activation during wrist flexion and extension performed under real, passive and motor imagined paradigms
… was higher than during flexion, by MRCP and mu-band ERD, with subjects also perceiving real wrist extension to be more difficult to perform. Passive movements found higher motor cortex activation for flexion (MRCP, beta-band ERD), however higher somatosensory cortical activation was present …
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Efeitos dos estímulos elétricos senoidais na resposta induzida cerebral: estudo da seletividade das fibras sensitivas
… response and ERD/ERS profiles of the alpha, beta, gamma and high-gamma bands were evaluated 3 kHz and 5 Hz, at intensities 1,2xLS, 2xLS and 3xLS. Results indicate habituation in the contralateral parietal region for the 3 kHz stimulus, as opposed to 5 Hz’s, at 1.2xLS in the alpha band. …
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Beta oscillations in frontal cortex and striatum represent post-processing of successful behavior
Beta band (13-30 Hz) oscillations in sensorimotor cortex are associated with motor performance, but the nature of this relationship is not clear. Recently, excessive beta activity in cortico-basal ganglia circuits has been recognized as a hallmark of Parkinson's disease. Renewed interest in beta …
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EEG Characterization During Motor Tasks That Are Difficult for Movement Disorder Patients
… found task-related depression (TRD) in the delta band at the F4 electrode, as well as TRD at the C3 electrode in the alpha band during a pencil-pickup task, and TRD at the F3 electrode in the beta band during voluntary swallowing. While delta-ERD in the finger movement exercise was likely due to …
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Adaptive Detection of Beta Bursts of Local Field Potentials Recorded from Subthalamic Nucleus in Patients with Parkinson’s Disease
… development of new therapeutic strategies. Beta band activity, which typically presents itself as bursts, has been continuously found in the LFP recordings of PD patients. These oscillations of neural activity have been shown to correlate with motor impairment and can be suppressed by …
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Action Intention Modulates the Temporal Dynamics of Object Feature Representation: An Electrophysiological Approach
… grasp planning, a pattern which was mirrored in beta band, possibly to facilitate the maintenance of weight information in working memory. At this point, I had not found any evidence of integrated representations between shape and weight cues. Yet, in a final study I demonstrated how two visual …
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Investigation of Spatio-Spectral Dynamics of Local Field Potentials in Parkinson’s Disease
… the first time that combination of different subband features derived from beta and high frequency oscillations of LFPs can be used to estimate the optimal track for DBS implantation and to identify the dorsal STN border with high accuracy. These results establish the initial evidence that LFPs …
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Investigation of the Clinical Utility of the Spatio-Spectral Dynamics of Sensorimotor ECoG in Response to Different Somatosensory Stimulation Modalities in Human Subjects
… also investigated power modulations in ECoG sub-bands in response to mechanical tactile stimulation at the periphery during anesthetized (unconscious) and awake(conscious) states. Firstly, we show that by investigating the Spatio-temporal characteristics of the SSEP waveforms through an …
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Spectral EEG analysis in refractory Juvenile Myoclonic Epilepsy: a new biomarker in epilepsy
… absolute power (AP) of delta, theta, alpha and beta bands. The Z scores were calculated by comparison with population parameters based one the age-dependent regression function. Was evaluated theta/alpha index and compared to intelligence quotient (IQ). Results: 38 samples, 19 in morning sample …
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A study of event-related electrocortical oscillatory dynamics associated with cued motor-response inhibition during performance of the Go/NoGo task within a sample of prenatally alcohol-exposed children and age-matched controls
… both experimental conditions, a frontal induced beta-band ERS related to decision-making; and (2) in the NoGo-condition, a frontal gamma-band ERS related to cognitive-control. Within the HE group, the beta-ERS was not observed in either of the experimental conditions, neither was the gamma-ERS …
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Computational Methods for the Assessment of Brain Connectivity in Visuo-Motor Integration Processes
… rhythms. Specifically, in the alpha frequency band (8-13 Hz) we documented an enhanced driving role of the visual cortex on the left motor cortex, suggesting a relation between this rhythm and the lateralization of the visuo-motor task. In the beta band (13-30 Hz), task-induced connectivity …
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USING TRANSCRANIAL MAGNETIC STIMULATION TO EXAMINE AND MODULATE BRAIN CIRCUITS IN SCHIZOPHRENIA
… their oscillatory activity, particularly in the beta and gamma frequency bands, might be implicated in the pathophysiology of schizophrenia. Evidence from studies employing electroencephalography (EEG) across several paradigms (resting state, steady state, sensory event-related, task-related, …
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