ABNORMALITIES OF POSTURE AND PROGRESSION IN THE PIGEON FOLLOWING EXPERIMENTAL LESIONS OF THE BRAIN

Abstract

Alternate progressive movements of the legs occur after transection of the spinal cord in the thoracic region; posture as in mammals is controlled by centers in the brain. After removal of 1 or both cerebral hemispheres, abnormal extension of the legs was observed. This was even more evident after removing the mesence-phalon. This extension appears analogous to the accentuation of the postural reflex in mammals after decerebration.