Noise-enhanced tactile sensation

Collins, James J.; Imhoff, Thomas T.; Grigg, Peter

doi:10.1038/383770a0

Cited by 445 publications

(269 citation statements)

References 11 publications

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“…The mechanism was then studied in biological systems because of the prevalence of noise, weak signals, and action potential firing thresholds. It has been demonstrated in nonhuman (Douglass et al 1993;Levin and Miller 1996;Russell et al 1999;Bezrukov and Vodyanoy 1995;Schmid et al 2001;Jung and Shuai 2001) and human (Hidaka et al 2000;Collins et al 1996;Richardson et al 1998;Simonotto et al 1997) nervous systems. These studies show that sensory perception in a number of species utilizes noise to optimize performance.…”

Section: Discussionmentioning

confidence: 99%

Auditory white noise reduces postural fluctuations even in the absence of vision

Ross

Balasubramaniam

2015

Exp Brain Res

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Section: Discussionmentioning

confidence: 99%

Auditory white noise reduces postural fluctuations even in the absence of vision

Ross

Balasubramaniam

2015

Exp Brain Res

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“…Strong evidence for SR in nonprimate sensory systems has been reported (Douglas, Wilkens, Pantazelou, & Moss, 1993;Levin & Miller, 1996;Moss et al, 2004;Ries, 2007), prompting experiments to be undertaken on humans (Collins, Imhoff, & Grigg, 1996;Moss et al, 2004;Riani & Simonotto, 1994;Simonotto et al, 1997). To date, evidence suggests that SR may be at work in both human sensory and perceptual processes (Moss et al, 2004), and to a degree that manifests itself in psychophysical data.…”

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confidence: 99%

Evidence of stochastic resonance in an auditory discrimination task may reflect response bias

Shepherd

Hautus

2009

Attention, Perception & Psychophysics

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Stochastic resonance is a mechanism that improves the detection of weak periodic signals when an optimal level of background noise is present. This counterintuitive concept is thought to involve a cooperative effect that arises out of a physical coupling between deterministic and random dynamics in nonlinear systems. We report the results of three psychophysical experiments designed to probe the auditory system for evidence of stochastic resonance. In all three experiments, participants judged which of two 1000-Hz tones was greater in intensity, with one of the tones embedded in a background of Gaussian noise. Experiment 1 used a two-alternative forced choice task and provided evidence of enhanced discriminability at an optimal level of noise. The aim of Experiment 2 was to determine whether the apparent enhancement observed in Experiment 1 was due to sensory processes or to a response bias. Receiver operating characteristic analysis supported an explanation based on decision processes, rather than a genuine sensory enhancement. An additional experiment (Experiment 3) was used to discount experimental artifacts.

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“…Although it appears counterintuitive because of the subsensory level of stimulation, SRS has enhanced the sensitivity of cutaneous receptors 28 by potentially bringing membrane potentials closer to threshold. 27 In 1 research investigation, 28 for example, SRS improved the ability to detect subthreshold tactile stimuli. In addition, researchers 24 found that SRS applied to the forearm increased muscle spindle signals during passive wrist rotation.…”

Section: Discussionmentioning

confidence: 99%

“…27 Essentially, SRS can prime the mechanoreceptors to fire and transmit sensory information. 27 Interestingly, SRS has been reported to facilitate the efferent output of the central nervous system by sensitizing tactile response 28 and amplifying reflexive muscle contractions in patients with sensorimotor deficits. 29,30 Thus, SRS may be used to enhance sensorimotor function in individuals with FAI.…”

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confidence: 99%

Noise-Enhanced Eversion Force Sense in Ankles With or Without Functional Instability

Ross

Linens

Wright

et al. 2015

Journal of Athletic Training

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Context: Force sense impairments are associated with functional ankle instability. Stochastic resonance stimulation (SRS) may have implications for correcting these force sense deficits.Objective: To determine if SRS improved force sense. Design: Case-control study. Setting: Research laboratory.Patients or Other Participants: Twelve people with functional ankle instability (age ¼ 23 6 3 years, height ¼ 174 6 8 cm, mass ¼ 69 6 10 kg) and 12 people with stable ankles (age ¼ 22 6 2 years, height ¼ 170 6 7 cm, mass ¼ 64 6 10 kg).Intervention(s): The eversion force sense protocol required participants to reproduce a targeted muscle tension (10% of maximum voluntary isometric contraction). This protocol was assessed under SRS on and SRS off (control) conditions. During SRS on , random subsensory mechanical noise was applied to the lower leg at a customized optimal intensity for each participant.Main Outcome Measure(s): Constant error, absolute error, and variable error measures quantified accuracy, overall performance, and consistency of force reproduction, respectively.Results: With SRS, we observed main effects for force sense absolute error (SRS off ¼ 1.01 6 0.67 N, SRS on ¼ 0.69 6 0.42 N) and variable error (SRS off ¼ 1.11 6 0.64 N, SRS on ¼ 0.78 6 0.56 N) (P , .05). No other main effects or treatment-bygroup interactions were found (P . .05).Conclusions: Although SRS reduced the overall magnitude (absolute error) and variability (variable error) of force sense errors, it had no effect on the directionality (constant error). Clinically, SRS may enhance muscle tension ability, which could have treatment implications for ankle stability.

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Noise-enhanced tactile sensation

Cited by 445 publications

References 11 publications

Auditory white noise reduces postural fluctuations even in the absence of vision

Auditory white noise reduces postural fluctuations even in the absence of vision

Evidence of stochastic resonance in an auditory discrimination task may reflect response bias

Noise-Enhanced Eversion Force Sense in Ankles With or Without Functional Instability

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