Interhemispheric connections between primary visual areas: beyond the midline rule
Braz. j. med. biol. res
;
35(12): 1441-1453, Dec. 2002. ilus
Article
in English
| LILACS
| ID: lil-326270
RESUMO
In the last five years, a number of detailed anatomical, electrophysiological, optical imaging and simulation studies performed in a variety of non-human species have revealed that the functional organization of callosal connections between primary visual areas is more elaborate than previously thought. Callosal cell bodies and terminals are clustered in columns whose correspondence to features mapped in the visual cortex, such as orientation and ocularity, are starting to be understood. Callosal connections are not restricted to the vertical midline representation nor do they establish merely point-to-point retinotopic correspondences across the hemispheres, as traditionally believed. In addition, anatomical studies have revealed the existence of an ipsilateral component of callosal axons. The aim of this short review is to propose how these new data can be integrated into an updated scheme of the circuits responsible for assembling the primary visual field map
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Axons
/
Visual Cortex
/
Visual Fields
/
Corpus Callosum
/
Functional Laterality
Limits:
Animals
Language:
English
Journal:
Braz. j. med. biol. res
Journal subject:
Biology
/
Medicine
Year:
2002
Type:
Article
/
Congress and conference
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal do Rio de Janeiro/BR
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