Aberrant ipsilateral retinotectal projection following optic nerve section in Xenopus.

Optic fibre regeneration in young Xenopus was studied by [(3)H]proline autoradiography and by mapping the visuotectal projection electrophysiologically from 5 to 210 days after sectioning the right optic nerve. Regenerated optic fibers were demonstrated morphologically both in the contra and ipsilateral tecta. In contrast, electrophysiological studies showed that the visuotectal projection was detectable only in the contralateral tectum. The apparent disparity between morphological and electrophysiological results is discussed.