Homosynaptic depression of the monosynaptic reflex following its activation
نویسندگان
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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Significant advances have been made during the past few years in our understanding of how the spinal monosynaptic reflex develops. Transcription factors in the Neurogenin, Runt, ETS, and LIM families control sequential steps of the specification of various subtypes of dorsal root ganglia sensory neurons. The initiation of muscle spindle differentiation requires neuregulin 1, derived from Ia aff...
متن کاملEffects of homosynaptic depression on spectral properties of H-reflex recordings.
The purpose of this study was to determine the effects of homosynaptic depression (HD) on spectral properties of the soleus (SOL) H-reflex. Paired stimulations, separated by 100 ms, were used to elicit an unconditioned and conditioned H-reflex in the SOL muscle of 20 participants during quiet standing. Wavelet and principal component analyses were used to analyze features of the time-varying sp...
متن کاملSpinal reflex excitability and homosynaptic depression after a bout of whole-body vibration.
Although whole-body vibration (WBV) affects neuromuscular performance, it remains unclear whether the effects are due to spinal reflex potentiation or inhibition, or differ between muscle groups. This study aimed to identify the effect of WBV on measures of spinal reflex excitability (H-reflex) and homosynaptic depression (HD) in the soleus (SOL) and medial gastrocnemius (MG) muscles. H-reflex ...
متن کاملLow-frequency depression of the monosynaptic reflex is not altered by tetrodotoxin-induced nerve conduction blockade.
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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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1957
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1957.sp005719