Frontal gamma-band enhancement during multistable visual perception

摘要: Abstract The aim of our study was to find out whether an increase in the gamma band may be related reversal phase during viewing ambiguous pattern. present describes significant (30–50 Hz) activity EEG states perceptual switching (reversal state). In experiments multistability induced with stimulus pattern, known as stroboscopic alternative motion (SAM). investigations carried 11 subjects included a measuring strategy three different experimental conditions: 1. (1) recording spontaneous baseline; 2. (2) naive observation pattern 3. (3) active SAM. results indicate that multistable perception is one multifold cognitive processes giving rise 40 Hz enhancement entire cortex. most enhancements were measured frontal areas and can reach increases 50% observations SAM, respectively, comparison recordings. destabilization system when patterns.