[The effect of barbiturates, sodium oxybutyrate and ketamine on the cycle of primary response recovery in the second somatosensory area of the cerebral cortex].

Barbiturates (ethaminal sodium and hexenal) injected to freely moving cats were shown to decrease the testing primary response in the second somatosensory cortical zone to the paired electrical stimulation of the thalamocortical fibers. Sodium hydroxybutyrate increased and ketamine failed to change the testing primary response in the second somatosensory cortical zone.