title: Interactions of acoustic and somatosensory evoked responses in a polysensory cortex of the cat.
abstract: Interactions of acoustic and somatosensory evoked potentials were studied in the anterior suprasylvian gyrus of the cat. The interactions showed dynamic changes and were susceptible to different kinds of influences. The interactions could be influenced by synchronous activation of the acoustic and somatosensory inputs with 2 Hz frequency, or by elevating the stimulus frequency. Interactions could be influenced by amphetamine and gamma-glutamyl-taurine, drugs known as capable of influencing the arousal level of the brain. The antagonists of amphetamine prevented this effect. Drugs acting on the cortical GABA-ergic system proved also to be decisive in the interactions of evoked potentials of different origins. In some experiments unit activity was recorded parallel with evoked potentials.
mesh_terms: D000161:Acoustic Stimulation; D000661:Amphetamine / Q000494:pharmacology; D000818:Animals; D001418:Baclofen / Q000494:pharmacology; D001640:Bicuculline / Q000494:pharmacology; D002415:Cats; D003975:Diazepam / Q000494:pharmacology; D004558:Electric Stimulation; D005072:Evoked Potentials, Auditory / Q000187:drug effects*; D005073:Evoked Potentials, Somatosensory / Q000187:drug effects*; D005973:Glutamine / Q000031:analogs & derivatives / Q000494:pharmacology; D006220:Haloperidol / Q000494:pharmacology; D008839:Microelectrodes; D009474:Neurons / Q000187:drug effects; D010281:Parathyroid Hormone / Q000494:pharmacology; D010852:Picrotoxin; D012110:Reserpine / Q000494:pharmacology; D013003:Somatosensory Cortex / Q000187:drug effects / Q000502:physiology*; D013654:Taurine / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D000661:Amphetamine; D001418:Baclofen; D001640:Bicuculline; D003975:Diazepam; D005973:Glutamine; D006220:Haloperidol; D010281:Parathyroid Hormone; D010852:Picrotoxin; D012110:Reserpine; D013654:Taurine; C020903:glutaurine