Proprioceptor


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Related to Proprioceptor: kinesthesia

proprioceptor

[‚prō·prē·ə′sep·tər]
(control systems)
A device that senses the position of an arm or other computer-controlled articulated mechanism of a robot and provides feedback signals.
(physiology)
A sense receptor that signals spatial position and movements of the body and its members, as well as muscular tension.

Proprioceptor

 

a specialized sensory nerve terminal that is located in the musculoskeletal system, which includes skeletal muscles, tendons, and ligaments. Proprioceptors react to the contraction and tension or the relaxation and stretching of muscles. They belong to the group of mechanoreceptors.

In addition to free nerve terminals, proprioceptors include the following: muscle spindles, which consist of several thin and intrafusal muscle fibers entwined by spiral-like nerve terminals; Golgi’s corpuscles, which are found in tendons; and Pacini’s corpuscles, which are concentrated in the fascia, tendons, and ligaments. The extent to which a spindle contracts is regulated by the gamma motor system (gamma efferent nerve fibers)—processes of special motor neurons of the spinal cord. Muscle spindles are excited by a lengthening of fibers, while Golgi’s corpuscles, or tendon organs, are excited by the contraction of fibers. Impulses from spindles that reach the central nervous system facilitate the contraction of a particular muscle and inhibit the contraction of its antagonist. Impulses from tendon proprioceptors exert the opposite effect. Signals on the movement of body parts originate in proprioceptors; these signals are the main regulators of information that arrives from other sensory organs.

References in periodicals archive ?
Therefore, in order to evidence the trainability of the proprioception, we need to prove that balance training can enhance either the sensitivity of the proprioceptors responding to mechanical stimulus or the neurophysiological efficiency of signal conversion and transmission.
Proprioceptors are mechanisms in joints and muscles that provide the CNS with information on the correctness of the movement and any changes that must be made while it is in progress.
Imagine yourself, a newly emerged living being, physically full-grown, eyes seeing, nose smelling, skin feeling, proprioceptors checking positions of head, limbs, torso, fingers.
Your eyes, inner ears, and sensory organs, called proprioceptors (pro-pree-oh, SEP-ters), found in your muscles and skin, are all part of a balance system that sends signals to the brain.
Walk-in Theater is an experiment with peripatetic perspective, engaging participants' proprioceptors and spatial memory to orient themselves as they navigate among multiple video streams in a 3D sound field.
Engaging visual, auditory and tactile senses, plus proprioceptors, to improve focus, attention, spatial awareness, sensory processing, memory, pairing skills, and overall neurological performance
A variety of afferent inputs, such as load receptors and proprioceptors, access spinal locomotor pattern generators and have been shown to drive and reset locomotor output [38-40].
KBA exercise programs are designed to decrease proprioceptive impairment by using agility and balance movements to activate, challenge, and adapt the nervous system's proprioceptors.
Theoretically this may alter the afferent input from the proprioceptors in the sub-occipital muscles which in turn could alter postural stability (Danis et al 1998).
Providing joint compressive forces, reducing sheer forces on injures supportive structures, enhancing joint congruity, re-educating joint proprioceptors, facilitating postural stabilization, and providing opportunity for spiral or diagonal movements are several of the reasons why closed kinetic chain activities need to be included in a rehabilitation protocol (1).
In closed-skill-dominated sports athletes perform based primarily on their own sense of internal receptors or proprioceptors, paying little attention to the environment because of its relative stability.