title: Electrophysiological relationship between claustrum and contralateral area 4 and 6 pyramidal tract neurons.
abstract: The connections between the claustrum and the contralateral motor areas were electrophysiologically investigated in cats under chloralose anesthesia. The extracellular unitary activity of 81 pyramidal tract neurons (PTNs) was recorded; 22 PTNs were inhibited by activation of the contralateral claustrum; inhibition was preceded by an early activation of 4 out of the 22 inhibited PTNs. Section of the corpus callosum abolished the contralateral claustrum effect, while the action of the ipsilateral homologous structure persisted.
mesh_terms: D000818:Animals; D001479:Basal Ganglia / Q000502:physiology*; D002415:Cats; D003337:Corpus Callosum / Q000502:physiology; D004558:Electric Stimulation; D005071:Evoked Potentials; D009044:Motor Cortex / Q000502:physiology*; D009433:Neural Inhibition; D009434:Neural Pathways / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology; D011712:Pyramidal Tracts / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology