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).
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Meek, H.J. (1990). Tectal morphology: connections, neurones and synapses. In: Douglas, R., Djamgoz, M. (eds) The Visual System of Fish. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0411-8_8
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