Physiologic Properties and Central Actions of Neck Muscle Spindles
Physiologic Properties and Central Actions of Neck Muscle Spindles
Activation of proprioceptors in the neck suggests reflexes that are abundant in the decerebrate cat and presumably contribute to the posture of the alert, behaving animal. Because they appear to contribute afferent input to these reflexes, the properties of neck muscles spindles are of considerable interest. Their distribution and structure have been studied in great detail and described in recent reviews. This chapter discusses their dynamic behaviors and their role in segmental stretch reflexes and their relation with the vestibular system. The first physiologic research on neck muscle spindles were those by Richmond and Abrahams who recorded from single dorsal root fibers in anesthetized cats paralyzed by Flaxedil.
Keywords: proprioceptors, neck, decerebrate cat, neck muscles spindles, segmental stretch reflexes, vestibular system
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