Stochastic resonance in the human vestibular system – Noise-induced facilitation of vestibulospinal reflexes

There is strong evidence that the presence of noise can enhance information processing in sensory systems via stochastic resonance (SR). To examine the presence of SR in human vestibulospinal reflex function. Healthy subjects were stimulated with 1 Hz sinusoidal GVS of varying amplitudes (0–1.9 mA)....

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Bibliographic Details
Published in:Brain stimulation 2018-03, Vol.11 (2), p.261-263
Main Authors: Wuehr, M., Boerner, J.C., Pradhan, C., Decker, J., Jahn, K., Brandt, T., Schniepp, R.
Format: Article
Language:English
Subjects:
Acoustic Stimulation - methods
Adult
Electric Stimulation - methods
Female
Galvanic vestibular stimulation
Humans
Male
Noise - adverse effects
Postural Balance - physiology
Reflex - physiology
Stochastic Processes
Stochastic resonance
Vestibular system
Vestibule, Labyrinth - physiology
Vestibulospinal reflexes
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Summary:There is strong evidence that the presence of noise can enhance information processing in sensory systems via stochastic resonance (SR). To examine the presence of SR in human vestibulospinal reflex function. Healthy subjects were stimulated with 1 Hz sinusoidal GVS of varying amplitudes (0–1.9 mA). Coherence between GVS input and stimulation-induced motion responses was determined and psychometric function fits were subsequently used to determine individual vestibulospinal reflex thresholds. This procedure was repeated with additional application of imperceptible white noise GVS (nGVS). nGVS significantly facilitated the detectability of weak subthreshold vestibular inputs (p 
ISSN:1935-861X
1876-4754
DOI:10.1016/j.brs.2017.10.016