[The effect of stimulation of the deep layers of somatosensory zones CI and CII on the activity of motor zone MI of the cat cortex].
The influence of electrical stimulation of deep layers of the somatosensory zones CI and CII on unit responses and intercortical evoked potentials (IEP) in the motor cortical zone MI in projection areas of the anterior contralateral limb was studied in cats anaesthetized with Nembutal and immobilized with diplacine. Latencies of the main IEP components and their different behaviour during repeated stimulation, experimental hypoxia and Nembutal administration suggested the presence of intercortical connections of an oligo- and polysynaptic nature. Only 22% of the MI zone units proved to be responsive to CI and CII stimulation; the latencies of the unit discharges varied from 4.3 to 35 msec. A relatively smaller effectiveness of short-latency inputs from CI and CII to MI was recorded as compared with long latency ones.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D005071:Evoked Potentials; D009044:Motor Cortex / Q000502:physiology*; D009434:Neural Pathways; D011930:Reaction Time; D013003:Somatosensory Cortex / Q000502:physiology*
Vliianie stimuliatsii glubokikh sloev somatosensornykh zon CI i CII na aktivnost'motornoĭ zony MI kory koshki