SPINAL REFLEXES IN MAN AND ANIMAL DURING REST AND AFTER STRESS. RHYTHM OF DISCHARGE OF SINGLE MOTONEURON IN MAN. ROTATORY RESPONSES AND INJURIES OF THE VESTIBULOCEREBELLAR SYSTEM. REMOTE STIMULATION OF THE MOTOR CORTEX IN THE CAT
Abstract
Oligo- and multisynaptic reflexes in the sciaticgastrocnemius territory have been studies in man during rest and after exhaustive physical exercise. During exhaustive physical exercise the only significant change consisted in a decrease of the spinal reflex time. The effect of curarelike substances on the same parameters as above has been also investigated in man. Changes in the reflex responses and in the excitability of nerve fibers have been found. The rhythm of discharge of the single motoneuron in man has been studied by recording the action potentials of the single muscle fiber in ten muscular groups from head to leg muscles. The rate of firing of the neuromuscular units has been found to be constant except at the very beginning of a voluntary contraction. The responses of single units of the flocculo-modular lobe to rotatory accelerations has been studied and differential discharges have been found. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1960
- Accession Number
- AD0259051
Entities
People
- Rodolfo Margaria
Organizations
- University of Milan