Tests for relabelling the goldfish tectum by optic fibers.
The temporal half of retina was removed in goldfish and the optic nerve was crushed. Electrophysiological recordings at 1-2 months revealed a retinotopic expansion of the nasal half retina across nearly the entire tectum. In other fish, an abnormal innervation of nasal fibers in anterior tectum was induced and allowed to persist for 51 months. When fibers were then crushed, nasal fibers innervated posterior tectum at 1-2 months showing no preference for anterior tectum. Apparently, fibers did not relabel tectum.
D000818:Animals; D001931:Brain Mapping; D004594:Electrophysiology; D006054:Goldfish; D009409:Nerve Crush; D009412:Nerve Fibers / Q000502:physiology*; D009416:Nerve Regeneration; D009462:Neurology / Q000379:methods*; D009900:Optic Nerve / Q000502:physiology*; D012160:Retina / Q000502:physiology; D013477:Superior Colliculi / Q000502:physiology*; D009435:Synaptic Transmission; D014795:Visual Pathways / Q000502:physiology*