THE REPRESENTATION OF THE RETINA ON THE OPTIC TECTUM OF THE PIGEON

Abstract

1. There is point to point representation of the retina on the optic tectum in the pigeon. The upper visual field is represented on the dorsal surface. 2. A response obtained from the first three layers of the optic tectum may have a latency as short as 25 msec., and show little fatigue when the stimulus is repeated at rates of not more than 5 per sec. 3. Responses from the inner layers show latencies of over 50 msec. and fatigue very rapidly. 4. Auditory responses were obtained from the nucleus mesencephalicus lateralis pars dorsalis.