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Transcortical striate connections in the opossum
Author(s) -
Kunze Diana L.,
Putnam Serpas J.,
Manning John W.
Publication year - 1968
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901320307
Subject(s) - striate cortex , orientation column , opossum , biology , neuroscience , anatomy , stimulus (psychology) , visual cortex , dorsum , psychology , psychotherapist
Extracellular unit responses to transcortical stimulus confirm striate to striate connections in the opossum. The presence of short latency fiber responses and antidromically activated cells indicate that these connections are direct. Responding units were located over all of the dorsal surface with the exception of small mediocaudal area. The depth of location corresponded to layers two through six of the striate cortex. A lack of correlation between the depth of location and the latency of firing indicates that the incoming fibers are distributed to all layers with the exception of layer one. Units were located which responded to both a transcortical stimulus and a flash of light presented to the contralateral eye. These interacting units were localized to a discrete position of the striate area. This arrangement presents a possible mechanism of tying the visual fields together in the binocular area and allowing continuity between the left and right visual fields.