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Research article summary:
Perceptual completion across the vertical meridian and the role of early visual cortex.
Abstract Extract:
Perceptual completion can link widely separated contour fragments and interpolate illusory contours (ICs) between them. The mechanisms underlying such long-range linking are not well understood. Here we report that completion is much poorer when ICs ... (Full abstract text below) Published 2002Feb
in Journal: Neuron
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Neuron.
2002 Feb;33(5):805-13
Perceptual completion across the vertical meridian and the role of early visual cortex.
Pillow J, Rubin N
Center for Neural Science, New York University, 4 Washington Place, New York, NY 10003, USA.
Perceptual completion can link widely separated contour fragments and interpolate illusory contours (ICs) between them. The mechanisms underlying such long-range linking are not well understood. Here we report that completion is much poorer when ICs cross the vertical meridian than when they reside entirely within the left or right visual hemifield. This deficit reflects limitations in cross-hemispheric integration. We also show that the sensitivity to the interhemispheric divide is unique to perceptual completion: a comparable task which did not require completion showed no across-meridian impairment. We propose that these findings support the existence of specialized completion mechanisms in early visual cortical areas (V1/V2), since those areas are likely to be more sensitive to the interhemispheric divide.
PMID : 11879656 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Jonathan | Pillow | J |
| Nava | Rubin | N |
Affiliation: Center for Neural Science, New York University, 4 Washington Place, New York, NY 10003, USA.
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