About: Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness

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type	http://eprints.org/ontology/ArticleEPrint http://eprints.org/ontology/EPrint Article Academic Article
seeAlso	HTML Summary of #69229 Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness
sameAs	Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness
http://eprints.org/ontology/hasAccepted	Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (PDF)
http://eprints.org/ontology/hasDocument	Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (PDF) Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (Other) Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (Other) Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (Other) Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (Other)
dc:hasVersion	Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness (PDF)
Title	Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness
described by	https://demo.openlinksw.com/about/id/entity/https/www.cs.kent.ac.uk/people/staff/akj22/materials/CO644/export_kar_RDFN3.n3 https://demo.openlinksw.com/about/id/entity/https/raw.githubusercontent.com/annajordanous/CO644Files/main/export_kar_RDFN3.n3
Date	2018-11-09
Creator	Pablo Burgos Gonzalo Rivera-Lillo Jose Egan?a Pedro Maldonado Daniel Rojas-Li?bano Srivas Chennu
status	peer reviewed published
Publisher	Elsevier
abstract	Objective The P300 component of a sensory event-related potential is one of the major electrophysiological markers used to explore remnants of cognitive function in patients with disorders of consciousness (DoC). However, measuring the P300 in patients is complicated by significant inter-trial variability commonly observed in levels of arousal and awareness. To overcome this limitation, we analyzed single-trial modulation of power in the delta and theta frequency bands, which underlie the P300. Methods In a preliminary cross-sectional study using a 24-channel EEG and a passive own-name oddball paradigm, we analyzed event-related synchronization (ERS) across trials in the delta and theta bands in a sample of 10 control and 12 DoC subjects. Results In comparison to controls, DoC subjects presented a low percentage of trials where delta ERS was observed. In particular, coordinated modulation between delta and theta in response to the stimulus was absent, with a high percentage of trials where only theta ERS was observed. Further, we found a positive correlation between the percentage of epochs with delta ERS and the strength of the P300. Conclusions Reduced modulation of spectral activity in the delta band in response to stimuli indicates a dissociation in the activity of the neural networks that oscillate in delta and theta ranges and contribute to the generation of the P300. Significance The reduction in spectral modulation observed in DoC provides a deeper understanding of neurophysiological dysfunction and the means to develop a more fine-grained marker of residual cognitive function in individual patients.
Is Part Of	Clinical Neurophysiology https://kar.kent.ac.uk/id/repository
Subject	Q Science
list of authors	https://kar.kent.ac.uk/id/eprint/69229#authors
issue	12
volume	129
is topic of	https://www.cs.kent.ac.uk/people/staff/akj22/materials/CO644/export_kar_RDFN3.n3 https://raw.githubusercontent.com/annajordanous/CO644Files/main/export_kar_RDFN3.n3
is primary topic of	HTML Summary of #69229 Reduced delta-band modulation underlies the loss of P300 responses in disorders of consciousness

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