Neural processing of illusory and real contours revealed by high-density ERP mapping

Publisher Website
Google Scholar
Abstract
Event-related potential (ERP) studies have shown that responses to illusory (IC), as compared to no contours (NC), may differ within 200 ms following stimulus presentation. However, whether these responses reflect the modulation of similar, or the activation ofdistinct brain regions has never been assessed. Using ERP map series and source localisation analyses, we compared early responses (0-200ms) to IC and NC, as well as to real contours (RC). Although IC displayed higher field strength during the NI component, topographical analyses showed a similar sequence of stable field configurations in all conditions. Source localisation applied to the NI map revealed bilateral activation of lateral-occipital regions. These results suggest that both IC and RC processing modulate a common network associated with filling-in processes and figure-ground segregation. Neuro Report13:965-968

This publication has 0 references indexed in Scilit: