Scientific Article
previous document  unige:94529  next document
add to browser collection
Title

Pre-stimulus beta oscillations within left posterior sylvian regions impact auditory temporal order judgment accuracy

Authors
Bernasconi, Fosco
Murray, Micah M
Published in International Journal of Psychophysiology. 2011, vol. 79, no. 2, p. 244-8
Abstract Both neural and behavioral responses to stimuli are influenced by the state of the brain immediately preceding their presentation, notably by pre-stimulus oscillatory activity. Using frequency analysis of high-density electroencephalogram coupled with source estimations, the present study investigated the role of pre-stimulus oscillatory activity in auditory spatial temporal order judgments (TOJ). Oscillations within the beta range (i.e. 18-23 Hz) were significantly stronger before accurate than inaccurate TOJ trials. Distributed source estimations identified bilateral posterior sylvian regions as the principal contributors to pre-stimulus beta oscillations. Activity within the left posterior sylvian region was significantly stronger before accurate than inaccurate TOJ trials. We discuss our results in terms of a modulation of sensory gating mechanisms mediated by beta activity.
Keywords Acoustic Stimulation/methodsAdultBeta Rhythm/physiologyBrain MappingCerebral Cortex/physiologyElectroencephalography/methodsEvoked Potentials, Auditory/physiologyFourier AnalysisFunctional LateralityHumansJudgment/physiologyMaleTime Perception/physiologyYoung Adult
Identifiers
PMID: 21056064
Full text
Article (Published version) (394 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Citation
(ISO format)
BERNASCONI, Fosco et al. Pre-stimulus beta oscillations within left posterior sylvian regions impact auditory temporal order judgment accuracy. In: International Journal of Psychophysiology, 2011, vol. 79, n° 2, p. 244-8. https://archive-ouverte.unige.ch/unige:94529

23 hits

0 download

Update

Deposited on : 2017-05-30

Export document
Format :
Citation style :