- Title
- Dissociation of reversal- and motor-related delta- and alpha-band responses during visual multistable perception
- Creator
- Mathes, Birgit; Pomper, Ulrich; Walla, Peter; Basar-Eroglu, Canan
- Relation
- Neuroscience Letters Vol. 478, Issue 1, p. 14-18
- Publisher Link
- http://dx.doi.org/10.1016/j.neulet.2010.04.057
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2010
- Description
- 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 1500 ms, 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.
- Subject
- multistable perception; reversal-related delta and alpha activity; control for motor potentials; selectively distributed and parallel working oscillatory networks
- Identifier
- http://hdl.handle.net/1959.13/928654
- Identifier
- uon:10409
- Identifier
- ISSN:0304-3940
- Language
- eng
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