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Representation of the visual field in the superior colliculus of the grey squirrel (Sciurus carolinensis) and the tree shrew (Tupaia glis)

Lane, Ronald H. and Allman, John M. and Kaas, Jon H. (1971) Representation of the visual field in the superior colliculus of the grey squirrel (Sciurus carolinensis) and the tree shrew (Tupaia glis). Brain Research, 26 (2). pp. 277-292. ISSN 0006-8993. https://resolver.caltech.edu/CaltechAUTHORS:20200626-123755198

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Abstract

Microelectrodes were used to map the representation of the visual field in the superior colliculus in two arboreal diurnal mammals, the grey squirrel and the tree shrew, in which the superior colliculus is extremely well developed. For comparison, portions of lateral striate cortex of both hemispheres were mapped in the same animals. The results suggest that the projection of the visual field to the superior colliculus both in tree shrew and squirrel differs from that to striate cortex in two ways: (1) the complete visual field of each eye appears to be represented in the contralateral superior colliculus, while the most nasal 30° of the visual field of each eye is represented in ipsilateral striate cortex; and (2) neurons in the superior colliculus are activated only by stimuli to the contralateral eye, while the lateral striate cortex receives input from both the ipsilateral eye and the contralateral eye. The projection to the superior colliculus in tree shrew and squirrel resembles that to striate cortex in that the region of the visual field corresponding to the intersection of the line of decussation and the horizontal meridian of the retina is represented in a larger area of the superior colliculus than other portions of the visual field.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/s0006-8993(71)80005-7DOIArticle
Additional Information:© 1971 Published by Elsevier. (Accepted September 7th, 1970) We thank Prof. C. N. Woolsey for helpful comments on the manuscript, Mrs. Jo Ann Ekleberry for preparation of histological material, Mr. Terrill Stewart for photography, and Mr. Timothy Volk for illustration 7. Supported by Grant 5-P01-NS-06225 to the Laboratory of Neurophysiology, Univ. of Wisconsin. R. H. Lane is a Rehabilitation Service Administration Trainee (HEW 161-T-70) in the Department of Communicative Disorders, J. M. Allman is a National Science Foundation Predoctoral Fellow, in the Department of Anthropology, Univ. of Chicago, and J. H. Kaas is supported by 1-P01-HD-03352.
Funders:
Funding AgencyGrant Number
NIH5-P01-NS-06225
NIH Predoctoral FellowshipHEW 161-T-70
NSF Graduate Research FellowshipUNSPECIFIED
NIH1-P01-HD-03352
Issue or Number:2
Record Number:CaltechAUTHORS:20200626-123755198
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200626-123755198
Official Citation:Ronald H. Lane, John M. Allman, Jon H. Kaas, Representation of the visual field in the superior colliculus of the grey squirrel (Sciurus carolinensis) and the tree shrew (Tupaia glis), Brain Research, Volume 26, Issue 2, 1971, Pages 277-292, ISSN 0006-8993, https://doi.org/10.1016/S0006-8993(71)80005-7.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104092
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:26 Jun 2020 21:41
Last Modified:26 Jun 2020 21:41

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