Anatomical Evidence for Classical and Extra-classical Receptive Field Completion Across the Discontinuous Horizontal Meridian Representation of Primate Area V2

In primates, a split of the horizontal meridian (HM) representation at the V2 rostral border divides this area into dorsal (V2d) and ventral (V2v) halves (representing lower and upper visual quadrants, respectively), causing retinotopically neighboring loci across the HM to be distant within V2. How...

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Bibliographic Details
Published in:Cerebral cortex (New York, N.Y. 1991) N.Y. 1991), 2009-04, Vol.19 (4), p.963-981
Main Authors: Jeffs, Janelle, Ichida, Jennifer M., Federer, Frederick, Angelucci, Alessandra
Format: Article
Language:English
Subjects:
Animals
Callithrix
feedback connections
Female
horizontal connections
Male
marmoset
Photic Stimulation - methods
Primates
retinotopy
short-range connections
surround
Visual Cortex - physiology
Visual Fields - physiology
Visual Pathways - physiology
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Summary:In primates, a split of the horizontal meridian (HM) representation at the V2 rostral border divides this area into dorsal (V2d) and ventral (V2v) halves (representing lower and upper visual quadrants, respectively), causing retinotopically neighboring loci across the HM to be distant within V2. How is perceptual continuity maintained across this discontinuous HM representation? Injections of neuroanatomical tracers in marmoset V2d demonstrated that cells near the V2d rostral border can maintain retinotopic continuity within their classical and extra-classical receptive field (RF), by making both local and long-range intra- and interareal connections with ventral cortex representing the upper visual quadrant. V2d neurons located
ISSN:1047-3211
1460-2199
DOI:10.1093/cercor/bhn142