Abstract:
:Common computational principles underlie processing of various visual features in the cortex. They are considered to create similar patterns of contextual modulations in behavioral studies for different features as orientation and direction of motion. Here, I studied the possibility that a single theoretical framework, implemented in different visual areas, of circular feature coding and processing could explain these similarities in observations. Stimuli were created that allowed direct comparison of the contextual effects on orientation and motion direction with two different psychophysical probes: changes in weak and strong signal perception. One unique simplified theoretical model of circular feature coding including only inhibitory interactions, and decoding through standard vector average, successfully predicted the similarities in the two domains, while different feature population characteristics explained well the differences in modulation on both experimental probes. These results demonstrate how a single computational principle underlies processing of various features across the cortices.
journal_name
Front Comput Neuroscijournal_title
Frontiers in computational neuroscienceauthors
Tzvetanov Tdoi
10.3389/fncom.2012.00028subject
Has Abstractpub_date
2012-05-22 00:00:00pages
28issn
1662-5188journal_volume
6pub_type
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