FACILITATION OF REFLEX ACTION IN THE SPINAL CAT FOLLOWING ASPHYXIA OF THE CORD FROM CYANIDE AND INCREASED INTRA-SPINAL PRESSURE

Publisher Website
Google Scholar
Abstract
The tenuissimus muscle in the spinal cat when contracting near its threshold, either as a nerve-muscle prep. or reflexly shows, with delicate registration, step-like changes in contraction height caused by the all-or-none activity of individual motor units. Such a reflex record is a delicate indicator of the ease or difficulty of reflex conduction within the cord. Anoxia of the cord, either from intraven. inj. of NaCn or from increased intraspinal pressure results at 1st in an increase in height of contraction, caused by the addition of one to several motor units. The anoxia does not affect peripheral nerve or muscle. Spinal cord anoxia brings about facilitation within the reflex center for tenuissimus.

This publication has 6 references indexed in Scilit: