Fluctuations of prestimulus oscillatory power predict subjective perception of tactile simultaneity.

ABSTRACT: Oscillatory activity is modulated by sensory stimulation but can also fluctuate in the absence of sensory input. Recent studies have demonstrated that such fluctuations of oscillatory activity can have substantial influence on the perception of subsequent stimuli. In the present study, we employed a simultaneity task in the somatosensory domain to study the role of prestimulus oscillatory activity on the temporal perception of 2 events. Subjects received electrical stimulations of the left and right index finger with varying stimulus onset asynchronies (SOAs) and reported their subjective perception of simultaneity, while brain activity was recorded with magnetoencephalography. With intermediate SOAs (30 and 45 ms), subjects frequently misperceived the stimulation as simultaneously. We com

SUBMITTER: Lange J 

PROVIDER: S-EPMC4705338 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature