[Evoked potentials of the sensomotor and parietal areas of the cortex to tonal stimuli in the cat].
In chronic experiments on cats dependence was studied of amplitudes and temporal parametres of evoked potentials (EPs) in the sensorimotor, parietal and auditory cortical areas on the frequency of tonal bursts 0.5-6.3 kHz. The amplitudes of EPs of the parietal and frontal cortical areas are maximally expressed in response to tones with the frequencies 0.6-0.8 kHz; a decrease of EP components amplitudes is observed in the parietal cortex at higher frequencies. Similar character of dependence is manifested for late components of EPs in the auditory cortex with peak latency of 110 ms. The maximal manifestation of EPs in the frontal cortex, as a rule, appeared at frequencies of 1.6 and in the range of 2.8-3.2 kHz as well. According to definite amplitude--frequency characteristics of the external ear the characteristics of reflection of tonal stimuli with frequencies up to 2.0 kHz in the EPs of associative cortical areas cannot be due to resonance properties of the peripheral part of cats auditory system.
D000818:Animals; D001303:Auditory Cortex / Q000502:physiology; D001931:Brain Mapping; D002415:Cats; D002540:Cerebral Cortex / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D009044:Motor Cortex / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology; D010898:Pitch Perception / Q000502:physiology*; D013003:Somatosensory Cortex / Q000502:physiology
Vyzvannye potentsialy sensomotornoĭ i temennoĭ oblasteĭ kory mozga koshki na tonal'nye stimuly.