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An electrophysiological study of the visual projection to the superior colliculus of the rat
Author(s) -
Siminoff Robert,
Schwassmann Horst Otto,
Kruger Lawrence
Publication year - 1966
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.901270402
Subject(s) - superior colliculus , projection (relational algebra) , electrophysiology , superior colliculi , biology , neuroscience , visual field , microelectrode , visual cortex , anatomy , visual system , physics , mathematics , electrode , algorithm , quantum mechanics
The topographical relations of the visual field with the superior colliculus of the rat was investigated using constant small visual stimuli and recording the electrical response of aggregate unit activity with fine tip metal microelectrodes. A precise essentially linear projection onto the contralateral colliculus was demonstrated after appropriate corrections for brain curvature were performed. The general pattern and arrangement of the retinotopic projection is similar to that found in infra‐mammalian vertebrates. An ipsilateral projection appears to be absent. The phasic properties and rhythmic discharge patterns of single units in the coliculus were studied with stationary and moving luminous stimuli.