Evoked Cortical Activity from Auditory Cortex in Anesthetized and Unanesthetized Cats.

Evoked electric responses of the auditory cortex of unanesthetized cats were studied by averaging techniques which enable us to detect responses in high-level background activity without sacrificing bandwidth. The results suggest that previous studies on evoked responses from behaving animals that are based upon ink-written electroencephalographic displays were chiefly concerned with a set of response components that differ from the classical evoked potentials in anesthetized animals.