Overlapping visual fields and ipsilateral retinal projections in turtles

The possible relationship between overlap of the visual fields and the importance of ipsilateral retinal projections was investigated in the two Chelonian genera Chinemys and Trionyx. Of these two species, Trionyx has more frontally located eyes, yet ipsilateral retinal projections could not be demo...

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Bibliographic Details
Published inBrain research bulletin Vol. 29; no. 3-4; p. 427
Main Authors Hergueta, S, Ward, R, Lemire, M, Rio, J P, Reperant, J, Weidner, C
Format Journal Article
LanguageEnglish
Published United States 01.09.1992
Subjects
Animals
Autoradiography
Retina - physiology
Turtles - physiology
Vision, Binocular - physiology
Visual Fields - physiology
Visual Pathways - physiology
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Summary:The possible relationship between overlap of the visual fields and the importance of ipsilateral retinal projections was investigated in the two Chelonian genera Chinemys and Trionyx. Of these two species, Trionyx has more frontally located eyes, yet ipsilateral retinal projections could not be demonstrated by radioautography. In Chinemys, on the other hand, the ipsilateral retinothalamic projections are extensive. It is suggested that, in contrast to Trionyx, the anatomic substrate of stereoscopic vision in Chinemys may be similar to that in mammals.
ISSN:0361-9230
DOI:10.1016/0361-9230(92)90079-D