[Excitatory effect of the superior colliculus on the motor neurons of extra-ocular muscles of cats].
The synaptic actions which might underline the caccadic eye movements induced by stimulation of the superior colliculus have been studied in the unanesthetized cat "encéphale isolé". Intracellular recordings of extraocular muscle medial rectus motoneurons have revealed a minimally disynaptic excitatory projection from the superior colliculus to the ipsilateral medial rectus motoneurons (latency 1.3 to 2.6 msec).
D000200:Action Potentials; D000818:Animals; D002415:Cats; D003655:Decerebrate State; D004558:Electric Stimulation; D005133:Eye Movements; D009046:Motor Neurons / Q000502:physiology*; D009434:Neural Pathways / Q000166:cytology / Q000502:physiology; D009801:Oculomotor Muscles / Q000294:innervation*; D013477:Superior Colliculi / Q000502:physiology*; D013569:Synapses / Q000502:physiology
Action excitatrice du colliculus supérieur sur les motoneurones des muscles extra-oculaires chez le Chat.