Contextual modulation in V1: the Rossi-Zipser controversy

A recent study (Rossi et al. 2001) implied the absence of figure-ground based contextual modulation in macaque V1, in contrast to the study on which it was modelled (Zipser et al. 1996). We suggest that Rossi et al. may have underestimated the extent of modulation by considering only positive and no...

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Bibliographic Details
Published in:Experimental brain research 2004-05, Vol.156 (1), p.118-123
Main Authors: CORTHOUT, E, SUPER, H
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Eye and associated structures. Visual pathways and centers. Vision
Fixation, Ocular - physiology
Fundamental and applied biological sciences. Psychology
Macaca
Macaca - physiology
Models, Theoretical
Orientation - physiology
Photic Stimulation - methods
Regression Analysis
Research Design
Vertebrates: nervous system and sense organs
Visual Cortex - physiology
Visual Perception - physiology
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Summary:A recent study (Rossi et al. 2001) implied the absence of figure-ground based contextual modulation in macaque V1, in contrast to the study on which it was modelled (Zipser et al. 1996). We suggest that Rossi et al. may have underestimated the extent of modulation by considering only positive and not also negative modulation and that their data may have shown figure-ground based contextual modulation. We then suggest a paradigm to assess whether it reflects figure-ground segregation, boundaries, or both.
ISSN:0014-4819
1432-1106
DOI:10.1007/s00221-004-1847-8