Introduction THIS is basically a case report on long-term direct electrical stimulation of the
auditory nerve in man. The report is supplemented by some historical facts, and by selected
comments on electrophysiology, physical chemistry, and perceptual psychology. These
comments are sometimes injected between segments of experimental observations and
thereby tend to favor one interpretation of the data over others. To counterbalance that trend
it was elected to describe as many observations as possible, even though some may seem …