The Low Frequency Depression of Rat Monosynaptic Reflex
نویسندگان
چکیده
منابع مشابه
The low frequency depression of rat monosynaptic relfex.
The rat monosynaptic reflex shows marked depression in response to repetitive stimulation of low frequency, which is called 'low frequency depression'. The site and the mechanism of this depression was studied and discussed in relation to the characteristic features of the rat spinal cord. 1) The depressive effect of the repetitive stimulation is referable to the motoneurons invaded by the impu...
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The present study is part of ongoing investigations into activity-related synaptic plasticity in the intact animal. In this investigation we sought to determine whether the previously reported increase in synaptic efficacy at the Ia-motoneuron connection following nerve conduction blockade could be attributed to changes in circuitry external to the monosynaptic pathway. Specifically, we used th...
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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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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: The Tohoku Journal of Experimental Medicine
سال: 1970
ISSN: 0040-8727,1349-3329
DOI: 10.1620/tjem.100.383