[Tecto-cortical connections in the rat visual system].
Electric stimulation of the colliculus superior evokes potentials (EP) in the visual cortex of the ipsilateral hemisphere of the rat brain, their localization coinciding with the zone of flash-evoked potentials. EPs of maximal amplitude were observed during stimulation of the central layers of the colliculus superior. Short latency of the EPs (3.2 +/- 1.1 msec; p less than 0.05) and the relevant morphological data suggest a single relay in rat's tecto-cortical visual system. The data are discussed in regard to the comparative telecephalisation of the retino-tectal system in submammalian vertebrates and in mammals.
D000818:Animals; D001931:Brain Mapping; D004558:Electric Stimulation; D005071:Evoked Potentials; D051381:Rats; D011930:Reaction Time; D013477:Superior Colliculi / Q000502:physiology*; D014793:Visual Cortex / Q000502:physiology*; D014795:Visual Pathways
Tekto-kortikal'nye sviazi v zritel'noĭ sisteme krysy