REFLEX DEPRESSION IN RHYTHMICALLY ACTIVE MONOSYNAPTIC REFLEX PATHWAYS
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چکیده
منابع مشابه
Reflex Depression in Rhythmically Active Monosynaptic Reflex Pathways
A study has been made of the depression that occurs when a monosynaptic reflex pathway is subjected to repetitive stimulation. Reflex depression has a dual origin. High frequency or early depression is postsynaptic in origin and results from subnormality in the motoneurons. Low frequency, late, or enduring depression is presynaptic in origin. The conditioning volley-test volley technique and th...
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Monosynaptic reflex responses elicited by repetitive stimulation in the frequency range between 60 and 100 per second yield evidence of temporal summation. The relation between stimulus interval and mean monosynaptic reflex response in the steady state at the frequencies studied is described adequately by an exponential decaying to 1/e in 4 msec. Since the temporal course of spatial summation i...
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A study has been made of conditions that support monosynaptic reflex transmission from afferent fibers of one part of a synergic muscle mass to motoneurons of another part. Heteronymous response so called can be brought on by prior tetanization of the afferent pathway and by asphyxiation to a critical stage. The response is facilitated by cooling and may appear in the cold preparation without n...
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Individual motoneuron responses to a variety of afferent inputs have been examined. At a given input some motoneurons respond to every trial, some to no trial, and some respond to a certain percentage of trials that is characteristic for the motoneuron at that input. The performance of a motoneuron is expressed by means of a firing index that relates the number of responses to the number of tri...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1957
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.40.3.409