publication . Article . 1985

Vibration and muscle contraction affect somatosensory evoked potentials

Leo G. Cohen; Arnold Starr;
Open Access
  • Published: 01 Jan 1985 Journal: Neurology, volume 35, pages 691-691 (issn: 0028-3878, eissn: 1526-632X, Copyright policy)
  • Publisher: Ovid Technologies (Wolters Kluwer Health)
  • Country: United States
Abstract
We recorded potentials evoked by specific somatosensory stimuli over peripheral nerve, spinal cord, and cerebral cortex. Vibration attenuated spinal and cerebral potentials evoked by mixed nerve and muscle spindle stimulation; in one subject that was tested, there was no effect on cutaneous input. Presynaptic inhibition of Ia input in the spinal cord and muscle spindle receptor occupancy are probably the responsible mechanisms. In contrast, muscle contraction attenuated cerebral potentials to both cutaneous and muscle spindle afferent volleys; central mechanisms modulating neurons in the dorsal columns nuclei, thalamus, or cerebral cortex are probably responsibl...
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free text keywords: Clinical Neurology, Somatosensory system, Neuroscience, Muscle contraction, medicine.symptom, medicine, Thalamus, Cerebral cortex, medicine.anatomical_structure, Stimulus (physiology), Muscle spindle, Chemistry, Anatomy, Somatosensory evoked potential, Spinal cord
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