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Tectal morphology: connections, neurones and synapses

  • Hans J. Meek

Abstract

Retinal efferents* or optic fibres leave the retina via the optic nerve and enter the brain through the optic chiasm. In the optic chiasm, most fibres cross the midline and project to the contralateral optic tectum by way of the optic tract, which splits into a dorsal and a ventral branch. Within the optic tectum, the majority of fibres traverse the optic layer to terminate in the stratum fibrosum et griseum superficiale. The present chapter deals with the connections, structure and ultrastructure of the optic tectum of teleostean fishes. Since most research has been done on goldfish, Carassius auratus, the present survey will mainly be restricted to this species. Other teleostean species will only be discussed when deviating or supplementary results have been obtained. (Other reviews: actinopterygians, Northcutt, 1983; elasmobranchs, Repérant et al., 1986).

Keywords

Optic Tectum Retinal Projection Torus Semicircularis Nucleus Pretectalis Nervus Terminalis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Chapman and Hall 1990

Authors and Affiliations

  • Hans J. Meek

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