Abstract:
:Glass patterns are randomized dot arrays that generate the perception of a global structure. They consist of correlated dot pairs which are generated by geometric transformations. The present study employed behavioral and event-related brain potential (ERP) measures to characterize the underlying neuronal processing when such patterns are perceived. Stimuli were circular, parallel, and randomized Glass patterns presented in two isoluminant colors using a choice reaction paradigm. Sixteen subjects were instructed to differentiate between colors with a button-press response. The N170 component increased in amplitude for circular patterns, and this effect was most pronounced bilaterally over occipito-temporal areas. The results suggest that the global perception of form generated by Glass patterns occurs at a stage of visual processing past area V1.
journal_name
Vision Resjournal_title
Vision researchauthors
Ohla K,Busch NA,Dahlem MA,Herrmann CSdoi
10.1016/j.visres.2005.03.015subject
Has Abstractpub_date
2005-09-01 00:00:00pages
2668-76issue
20eissn
0042-6989issn
1878-5646pii
S0042-6989(05)00202-6journal_volume
45pub_type
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