TY  - JOUR
PY  - 2010//
TI  - Dissociation of reversal- and motor-related delta and alpha band responses during visual multistable perception
JO  - Neuroscience letters
A1  - Mathes, Birgit
A1  - Pomper, Ulrich
A1  - Walla, Peter
A1  - Basar-Eroglu, Canan
SP  - 14
EP  - 18
VL  - 478
IS  - 1
N2  - Multistable visual perception refers to phenomena, in which one invariant stimulus pattern is perceived in at least two different, mutually exclusive ways. In this EEG study we differentiate between perceptual- and motor-related processes during perceptual reversals. Delta and alpha band activity was analyzed while participants answered to a perceptual reversal either immediately or with a delay of approximately 1500ms, thereby separating reversal-related and motor-related activity. On the single sweep level a reversal-related positive delta response and reversal-related desynchronisation of alpha activity could be detected irrespective of the motor response. Both conditions elicited the strongest reversal-related modulations at posterior locations. Contrary, motor-related responses were found predominantly at central locations. These findings were supported by a control experiment, using a slightly modified stimulus that allowed unambiguous perceptual changes to be triggered exogenously. In conclusion, this study demonstrates that the brain response to perceptual reversals differs from motor-related processes elicited by the button-press indicating the perceptual reversal. The results of this study, therefore, indicate that perceptual- and motor-related processes are achieved in multiple selectively distributed and parallel working oscillatory networks of the brain.<p />  <p>Language: en</p>
LA  - en
SN  - 0304-3940
UR  - http://dx.doi.org/10.1016/j.neulet.2010.04.057
ID  - ref1
ER  -