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The role of superior colliculus in vision: Visual form discrimination in cats with superior colliculus ablations
Author(s) -
Tunkl J. E.,
Berkley M. A.
Publication year - 1977
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.901760408
Subject(s) - superior colliculus , stimulus (psychology) , lesion , neuroscience , superior colliculi , biology , inferior colliculus , pretectal area , anatomy , cats , visual system , midbrain , audiology , psychology , medicine , central nervous system , visual cortex , cognitive psychology , surgery , nucleus
The rate of acquisition of visual form discriminations in cats with superior colliculus damage was measured in a testing apparatus requiring a minimal amount of stimulus localization in space. In animals with bilateral superior colliculus ablations, acquisition was impaired relative to acquisition in normal animals. In these animals, the extent of the lesion was related to the severity of the deficit. In split‐brain preparations with unilateral superior colliculus ablations, acquisition with the eye ipsilateral to the lesion was impaired relative to acquisition with eye contralateral to the lesion. The deficits observed did not depend upon damage to pretectum. The results support the conclusion that the superior colliculus participates in certain aspects of form vision.