[Single auditory evoked responses of the temporal and associative regions of the cerebral cortex in conscious cats].

In awake cats single realizations of acoustic evoked responses (AER) from temporal, parietal and frontal cortex were registered and compared with averaged responses obtained by means of optic superposition of the same realizations. It is shown that the composition of these different realizations considerably varies due to inconstancy of manifestation of each component. The fact that the preceding component falls out does not exclude manifestation of the following one, which proves the functional independence of the mechanisms producing each component. The simultaneous registration of single realizations of AERs of different cortical areas shows that the reactions of frontal and parietal areas are independent of AERs of the temporal cortex.