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

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

Errata

Year: 2009, Volume: 19, Issue: 3

Year: 2009, Volume: 19, Issue: 2

Year: 2009, Volume: 19, Issue: 1

Year: 2008, Volume: 18

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

Content Provider	PubMed Central
Author	Jeffs, Janelle Ichida, Jennifer M. Federer, Frederick Angelucci, Alessandra
Copyright Year	2009
Abstract	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 <0.9–1.3 mm from the V2d rostral border, whose RFs presumably do not cross the HM, make nonretinotopic horizontal connections with V2v neurons in the supra- and infragranular layers. V2d neurons located <0.6–0.9 mm from the border, whose RFs presumably cross the HM, in addition make retinotopic local connections with V2v neurons in layer 4. V2d neurons also make interareal connections with upper visual field regions of extrastriate cortex, but not of MT or MTc outside the foveal representation. Labeled connections in ventral cortex appear to represent the “missing” portion of the connectional fields in V2d across the HM. We conclude that connections between dorsal and ventral cortex can create visual field continuity within a second-order discontinuous visual topography.
Related Links	http://dx.doi.org/10.1093/cercor/bhn142
Ending Page	981
Page Count	19
Starting Page	963
File Format	PDF
ISSN	10473211
e-ISSN	14602199
Journal	Cerebral Cortex (New York, NY)
Issue Number	4
Volume Number	19
Language	English
Publisher	Oxford University Press
Publisher Date	2009-04-01
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cognitive Neuroscience Cellular and Molecular Neuroscience

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