The nature of afferents from the large dorsal neck muscles that project to the superior colliculus in the cat
| Autor: | V C Abrahams, C J Turner |
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| Rok vydání: | 1981 |
| Předmět: |
Dorsum
Superior Colliculi genetic structures Physiology Neural Conduction Action Potentials Stimulation Stimulus (physiology) Neck Muscles Afferent Muscle tension Animals Medicine Neurons Afferent Muscle Spindles Afferent Pathways Proprioception business.industry Muscles Superior colliculus Anatomy Neck muscles Cats business Neuroscience Research Article Muscle Contraction |
| Zdroj: | The Journal of Physiology. 319:393-401 |
| ISSN: | 0022-3751 |
| DOI: | 10.1113/jphysiol.1981.sp013916 |
| Popis: | 1. A 3.5-5 mm passive stretch of dorsal neck muscles at velocities of 50 mm/sec, a stimulus adequate to excite most neck muscle spindles, was usually ineffective in eliciting unit discharge in the superior colliculus. The sudden release of muscle tension was effective and excited fifty-seven of sixty-seven units tested. 2. When electrical stimulation of neck muscle nerves was used, a stimulus strength sufficient to excite Group III muscle afferents was usually required to elicit unit discharge in the superior colliculus. 3. It is concluded that the projection from neck muscles to the superior colliculus largely takes origin in Group III afferent whose function remains to be determined. Some contribution to the projection to the superior colliculus from proprioceptive afferents served by larger fibres cannot be ruled out. |
| Databáze: | OpenAIRE |
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