[Spatio-temporal evolution of optic tract regeneration in Rutilus rutilus].

Regeneration of the different components of the optic tract of Rutilus takes place at a variable rate and follows a relatively precise pattern. The first optic centres to be reinnervated belong to the lateral thalamo-pretectal group (5 weeks at 14 degrees C after section of the optic nerve), followed by the anterior optic tectum and lateral geniculate nucleus (8 weeks after section), the central regions of the tectum, the suprachiasmatic nucleus and the nucleus of the basal optic root (10-15 weeks after section), and finally the medial thalamo-pretectal nuclei and the caudal regions of the optic tectum (16-25 weeks after section).