Facilitation of transmission via inhibitory pathway 1a to spinal extensor motoneurons in response to stimulation of the forelimb nerves in cats
| Autor: | V. D. Avelev |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Withdrawal reflex
Stimulation Inhibitory postsynaptic potential Synaptic Transmission chemistry.chemical_compound Postsynaptic potential Conditioning Psychological Forelimb Neural Pathways Reflex medicine Animals Nervous System Physiological Phenomena Muscle Skeletal Motor Neurons Chloralose musculoskeletal neural and ocular physiology General Neuroscience Neural Inhibition musculoskeletal system Spinal cord Electric Stimulation body regions medicine.anatomical_structure Spinal Cord chemistry Cats Facilitation Neuroscience |
| Zdroj: | Neuroscience and Behavioral Physiology. 30:481-485 |
| ISSN: | 1573-899X 0097-0549 |
| DOI: | 10.1007/bf02463104 |
| Popis: | Activation of forelimb flexor reflex afferent in cats anesthetized with a mixture of Chloralose and Nembutal evoked temporospatial facilitation in the reciprocal inhibitory pathways to spinal extensor motoneurons. The amplitude of disynaptic reciprocal 1a inhibitory postsynaptic potentials (IPSP) evoked in the extensor motoneurons by activation of the most excitable fibers of the nerve supplying the antagonist muscle increased several-fold using conditioning stimulation of the forelimb nerve. Facilitation of 1a IPSP occurred on a background of IPSP evoked by descending inter-limb discharges. Facilitation of 1a IPSP had a latent period of 18-20 msec and could last to 60 msec. The possible role of inhibitory 1a interneurons in interlimb coordination is discussed. |
| Databáze: | OpenAIRE |
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