Accession Number : AD0623269

Title :   ORGANIZATION OF AFFERENT PROJECTIONS TO THE MOTOR CORTEX OF THE CAT (DONNEES SUR L'ORGANISATION DES PROJECTION AFFERENTES AU NIVAEU DU CORTEX MOTEUR DU CHAT,

Corporate Author : CENTRE D'ETUDES DE PHYSIOLOGIE NERVEUSE ET D'ELECTROPHYSIOLOGIE PARIS (FRANCE)

Personal Author(s) : Buser,P. ; Imbert,M.

Report Date : 1959

Pagination or Media Count : 11

Abstract : By cortical recording with extracellular microelectrodes, projections from different sensory modalities (visual, auditory, somatic) were identified in the motor (pericruciate) area of the cat and their organization studied. These experiments were performed on fifty animals, either under deep chloralosane narcosis, or unanaesthetized (curarised preparations). It is shown that, on the pericruciate cortex, and in both experimental conditions, a dominant number of 'polyvalent' units may be found, activated by any of the tested sensory systems. This pattern is in sharp contrast with the one found in the more caudally lying somatic area I. A transition zone, whose characteristics are complex, may also be identified. Some functional implications of our results (reflex activation of the pyramidal system by sensory stimulations, relationships between somatic I and motor area), are discussed. (Author)

Descriptors :   (*CEREBRAL CORTEX, PERCEPTION), (*PERCEPTION, CEREBRAL CORTEX), MOTOR REACTIONS, CENTRAL NERVOUS SYSTEM, VISION, HEARING, BRAIN, STIMULATION(PHYSIOLOGY), REFLEXES, CATS, FRANCE

Distribution Statement : APPROVED FOR PUBLIC RELEASE