[The effect of cryogenic exclusion of the neocortex on preservation of the functioning of its temporal regions].

In chronic experiments on nine cats a study was made of different forms of their behavior in conditions of cold elimination of the cerebral cortex with the exception of the temporal areas. The first sessions of cooling produced a diminution of alimentary excitability, enhanced motor activity, loss of the reaction of mouse chasing and of a defensive reaction against the dog, and a disappearance of previously elaborated conditioned runnings to the feeding trough, etc. In the course of subsequent experiments with the neocortex cooling, the disturbed forms of behavior were restored. In the second and third sessions alimentary excitation was considerably restored; by the sixth and seventh sessions motor activity became normal, while the 20th to 25th sessions exhibited a protective reaction against the dog. Conditioned runnings restored in the seventinth session were manifest in the 20th to 25th sessions in 80% of cases. It is assumed that the temporal areas of the neocortex while playing a considerable part in integrating the activity of the whole brain, including the formation and manifestation of conditioned reflexes, under normal conditions, to a large extent lose their integrative role when the rest of the neocortex is elimated.