Tonic vibration reflex is a sustained contraction of a muscle subjected to vibration. This reflex is caused by vibratory activation of muscle spindles — muscle receptors sensitive to stretch.
Tonic vibration reflex is evoked by placing a vibrator — which in this case is typically an electrical motor with an eccentric load on its shaft — on a muscle's tendon. 30–100 Hz vibration activates receptors of the skin, tendons and, most importantly, muscle spindles. Muscle spindle discharges are sent to the spinal cord through afferent nerve fibers, where they activate polysynaptic reflex arcs, causing the muscle to contract.
The effects of sustained vibratory stimulation on muscle contraction, posture and kinesthetic perceptions are much more complex than merely contraction of the muscle being vibrated.
Russian scientists Victor Gurfinkel, Mikhail Lebedev, Andrew Polyakov and Yuri Levick used vibratory stimulation to study human posture control and spectral characteristics of electromyographic (EMG) activity.
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Tonicvibrationreflex is a sustained contraction of a muscle subjected to vibration. This reflex is caused by vibratory activation of muscle spindles...
term H-reflex refers to the analogous reflex stimulated electrically, and tonicvibrationreflex for those stimulated to vibration. A tendon reflex is the...
dictionary. Wikimedia Commons has media related to Patellar reflex. Tonicvibrationreflex – Sustained contraction of vibrated muscle Motor control – Regulation...
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firing rate are called tonic. Phasic mechanoreceptors are useful in sensing such things as texture or vibrations, whereas tonic receptors are useful for...
low-frequency vibration in the human vestibular system?. Neurosci Lett 451:175-180. Deriu F, Rothwell JC. A sound-evoked vesibulomasseteric reflex in healthy...
velocity-dependent increase in tonic stretch reflexes with exaggerated tendon jerks, resulting from hyper-excitability of the stretch reflex as one component of...
sound vibrations to the eardrum, increasing the sound pressure in the middle frequency range. The middle-ear ossicles further amplify the vibration pressure...
matter. Other actions such as locomotion, breathing, and chewing have a reflex aspect to them: the contractions can be initiated both consciously or unconsciously...
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the central nervous systems, but also from peripheral mechanisms such as reflex loop resonances. Epilepsy is a common chronic neurological disorder characterized...
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physical causes. Judged by its effects, it participates in the property of tonic remedies, and like them produces salutary or injurious effects according...
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