[Responses of neurons in isolated strips of cat auditory cortex to intracortical stimulation].
Neuron responses in an isolated slab of the auditory cortex (A1 zone) to intracortical electric stimulation of its layer IV have been investigated extracellularly in acute experiments on cats immobilized with d-tubocurarin. Responding neurons have been found in all layers of the slab. Their distribution in the slab depth depended on the distances between the recording and stimulating electrodes. The latent periods of responses of different neurons varied between 0.8 and 25 ms. Most of neurons were involved in the reaction mono- or disynaptically within the employed limits of distances between the electrodes (0.5-2 mm). However, many neurons responded polysynaptically. This indicates a complex character of interneuron interactions even in a limited section of the brain cortex. No after-discharges with latent periods above 40 ms have been recorded in the isolated auditory cortex slab in response to intracortical stimulation.
D000818:Animals; D001303:Auditory Cortex / Q000166:cytology / Q000502:physiology*; D001931:Brain Mapping; D002415:Cats; D002541:Cerebral Decortication; D004558:Electric Stimulation; D005071:Evoked Potentials; D011930:Reaction Time / Q000502:physiology; D013569:Synapses / Q000502:physiology
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