H reflex study in upper motoneuron diseases
- 1 January 1967
- journal article
- research article
- Published by Wolters Kluwer Health in Neurology
- Vol. 17 (1), 32
- https://doi.org/10.1212/wnl.17.1.32
Abstract
The H reflex was studied by meansof paired stimulation in 9 normal subjects, 5 parkinsonian patients, 4 patients with spasticity, and 8 patients with hyperkinetic-dystonic syndromes. The excitability recovery curve expressed by this method showed the long-lasting depression of motoneurons following the conditioning afferent volley in normal subjects. All of the diseased groups showed early recovery followed by facilitation in their excitability recovery curve of motoneurons. The excitability recovery curves of both normal and diseased.groups remained unaltered under procaine nerve bloekat a time when there was a block predominantly of fusimotor nerve fibers. This supports the idea that in parkinsonism, spastictty, and hyperkinetic-dystonic syndromes there exists an abnormal excitation of spinal alpha motoneurons independent, at least in part, of the fusimotor system.This publication has 17 references indexed in Scilit:
- THE EFFECT OF THE LOCAL APPLICATION OF PROCAINE ON THE STRETCH REFLEX OF THE SOLEUS MUSCLE OF THE CAT DECEREBRATED BY ANAEMIA1958
- THE DISCHARGE FROM MUSCLE SPINDLES AS AN INDICATOR OF GAMMA-EFFERENT PARALYSIS BY PROCAINE1958
- The relative sensitivity of muscle nerve fibres to procaineThe Journal of Physiology, 1957
- The selective effect of procaine on the stretch reflex and tendon jerk of soleus muscle when applied to its nerveThe Journal of Physiology, 1957
- Cholinergic and inhibitory synapses in a pathway from motor‐axon collaterals to motoneuronesThe Journal of Physiology, 1954
- The effect of stretch receptors from muscle on the discharge of motoneuronesThe Journal of Physiology, 1952
- ELECTROPHYSIOLOGICAL STUDIES OF REFLEX ACTIVITY IN PATIENTS WITH LESIONS OF THE NERVOUS SYSTEM .3. MOTONEURONE EXCITABILITY FOLLOWING AFFERENT NERVE VOLLEYS IN PATIENTS WITH ROSTRALLY ADJACENT SPINAL CORD DAMAGE1952
- ELECTROPHYSIOLOGICAL STUDIES OF REFLEX ACTIVITY IN PATIENTS WITH LESIONS OF THE NERVOUS SYSTEM .1. A COMPARISON OF SPINAL MOTONEURONE EXCITABILITY FOLLOWING AFFERENT NERVE VOLLEYS IN NORMAL PERSONS AND PATIENTS WITH UPPER MOTOR NEURONE LESIONS1952
- CENTRAL EFFECTS OF CENTRIPETAL IMPULSES IN AXONS OF SPINAL VENTRAL ROOTSJournal of Neurophysiology, 1946
- The response of a muscle spindle during active contraction of a muscleThe Journal of Physiology, 1931