Border ownership selectivity in human early visual cortex and its modulation by attention

Date

2009

Editor(s)

Advisor

Supervisor

Co-Advisor

Co-Supervisor

Instructor

Source Title

The Journal of Neuroscience

Print ISSN

0270-6474

Electronic ISSN

1529-2401

Publisher

Society for Neuroscience

Volume

29

Issue

2

Pages

460 - 465

Language

English

Journal Title

Journal ISSN

Volume Title

Series

Abstract

Natural images are usually cluttered because objects occlude one another. A critical aspect of recognizing these visual objects is to identify the borders between image regions that belong to different objects. However, the neural coding of border ownership in human visual cortex is largely unknown. In this study, we designed two simple but compelling stimuli in which a slight change of contextual information could induce a dramatic change of border ownership. Using functional MRI adaptation, we found that border ownership selectivity in V2 was robust and reliable across subjects, and it was largely dependent on attention. Our study provides the first human evidence that V2 is a critical area for the processing of border ownership and that this processing depends on the modulation from higher-level cortical areas.

Course

Other identifiers

Book Title

Citation