Electrophysiological Analysis of Retino-Tectal Synapses in Teleosts
In general terms, there are two visual systems in vertebrates: the retino-tectal system and the retino-geniculo-striate system. More than half of the vertebrate species are fishes, and lack a retino-geniculo-striate system. In these animals, as well as in amphibians, reptiles and birds, the optic tectum is by far the main recipient of the retinofugal axons. Hence, in an overwhelming majority of vertebrates the manner in which the tectal neurons respond to retinofugal impulses constitutes a fundamental mechanism in visual function. Some of our findings regarding this mechanism will be reviewed in the present article.
KeywordsOptic Nerve Field Potential Optic Tectum Compound Action Potential Apical Segment
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