PERSISTENCE OF APPROACH RESPONSE AFTER DECEREBRATION IN NEWLY HATCHEDQUAIL CHICKS

The role of telencephalon in controlling the unconditional approach re sponse was studied in newly hatched Japanese quail chicks by lesions. Approach to flickering light and a moving object were not diminished b y ablation of various telencephalic arras, ranging from caudal forebra in lesions to complete bilateral hemispherectomy. Open field activity and tonic immobility were likewise unaffected. Results indicated that the neural mediation of unconditional sensory-motor components of impr inting is anatomically separated from the telencephalon, where recogni tion memory is thought to be formed.