Effect of imperceptible vibratory noise applied to wrist skin on fingertip touch evoked potentials - an EEG study

Seo, Na Jin; Lakshminarayanan, Kishor; Bonilha, Leonardo; Lauer, Abigail; Schmit, Brian D.

doi:10.14814/phy2.12624

Cited by 34 publications

(35 citation statements)

References 40 publications

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Section: Discussionmentioning

confidence: 99%

“…Seo et al [98] provided a more direct explanation. They investigated the influence of imperceptible vibrotactile noise on the wrist, as used in the current study, on somatosensory evoked potential of fingertip touch [98]. As a result, the peak-to-peak somatosensory evoked potentials of the sensorimotor cortex were significantly increased by imperceptible vibrotactile noise (SR on) compared to the absence of vibrotactile noise (SR off) [98].…”

Section: Discussionmentioning

confidence: 99%

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Stochastic resonance improves visuomotor temporal integration in healthy young adults

Nobusako¹,

Osumi²,

Matsuo³

et al. 2018

PLoS ONE

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Mechanical and electrical noise stimulation to the body is known to improve the sensorimotor system. This improvement is related to stochastic resonance (SR), a phenomenon described as a “noise benefit” to various sensory and motor systems. The current study investigated the influence of SR on visuomotor temporal integration and hand motor function under delayed visual feedback in healthy young adults. The purpose of this study was to measure the usefulness of SR as a neurorehabilitation device for disorders of visuomotor temporal integration. Thirty healthy volunteers underwent detection tasks and hand motor function tests under delayed visual feedback, with or without SR. Of the 30 participants, 15 carried out the tasks under delayed visual feedback in the order of SR on-condition, off-condition, off-condition, and on-condition. The remaining 15 participants conducted the experimental tasks in the order of SR off-condition, on-condition, on-condition, and off-condition. Comparisons of the delay detection threshold (DDT), steepness of the delay detection probability curves, box and block test (BBT) scores, and nine-hole peg test (NHPT) scores between the SR on- and off-conditions were performed. The DDT under the SR on-condition was significantly shortened compared with the SR off-condition. There was no significant difference between the SR on- and off-conditions for the steepness of the delay detection probability curves, BBT scores, and NHPT scores. SR improved visuomotor temporal integration in healthy young adults, and may therefore improve movement disorders in patients with impaired visuomotor temporal integration. However, because the current results showed that SR did not improve hand motor function under delayed visual feedback, it may not improve motor function when a large distortion of visuomotor temporal integration is present. Further studies are required considering several limitations of the current study, and future clinical trials are necessary to verify the effects of motor training using SR for the treatment of visuomotor temporal integration disorders.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Stochastic resonance improves visuomotor temporal integration in healthy young adults

Nobusako¹,

Osumi²,

Matsuo³

et al. 2018

PLoS ONE

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“…In previous studies applying sub-threshold tactile stimulation, the resulting stimulation amplitudes were usually not reported (Priplata et al, 2002;Collins et al, 2003;Seo et al, 2014Seo et al, , 2015Stephen et al, 2014;Dettmer et al, 2016). However, this information is an important requirement for future study designs.…”

Section: Stimulation Amplitudes Are Consistent With Previous Findingsmentioning

confidence: 99%

“…To gain a better understanding of the mechanisms involved when stochastic stimulation is applied to different body sites, further studies using kinematic outcome measures, EEG or MRI imaging are required, especially when the upper extremities are concerned. In contrast to electromagnetic tactors frequently used in previous studies (Priplata et al, 2006;Ribot-Ciscar et al, 2013;Ross et al, 2013;Seo et al, 2014Seo et al, , 2015, the pneumatic stimulator developed for this study is compatible with MRI systems and therefore ideal for such future experiments.…”

Section: Stimulation Amplitudes Are Consistent With Previous Findingsmentioning

confidence: 99%

Age-Dependent Asymmetry of Wrist Position Sense Is Not Influenced by Stochastic Tactile Stimulation

Georgarakis

Sonar

Rinderknecht

et al. 2020

Front. Hum. Neurosci.

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Stochastic stimulation has been shown to improve movement, balance, the sense of touch, and may also improve position sense. This stimulation can be non-invasive and may be a simple technology to enhance proprioception. In this study, we investigated whether sub-threshold stochastic tactile stimulation of mechanoreceptors reduces age-related errors in wrist position estimation. Fifteen young (24.5 ± 1.5 y) and 23 elderly (71.7±7.3 y) unimpaired, right-handed adults completed a wrist position gauge-matching experiment. In each trial, the participant's concealed wrist was moved to a target position between 10 and 30 • of wrist flexion or extension by a robotic manipulandum. The participant then estimated the wrist's position on a virtual gauge. During half of the trials, sub-threshold stochastic tactile stimulation was applied to the wrist muscle tendon areas. Stochastic stimulation did not significantly influence wrist position sense. In the elderly group, estimation errors decreased non-significantly when stimulation was applied compared to the trials without stimulation [mean constant error reduction µ(θ of con ) = 0.8 • in flexion and µ(θ oe con ) = 0.7 • in extension direction, p = 0.95]. This effect was less pronounced in the young group [ µ(θ y con ) = 0.2 • in flexion and in extension direction, p = 0.99]. These improvements did not yield a relevant effect size (Cohen's d < 0.1). Estimation errors increased with target angle magnitude in both movement directions. In young participants, estimation errors were non-symmetric, with estimations in flexion [µ(θ yf con ) = 1.8 • , σ (θ yf con ) = 7.0 • ] being significantly more accurate than in extension [µ(θ ye con ) = 8.3 • , σ (θ ye con ) = 9.3 • , p < 0.01]. This asymmetry was not present in the elderly group, where estimations in flexion [µ(θ of con ) = 7.5 • , σ (θ of con ) = 9.8 • ] were similar to extension [µ(θ oe con ) = 7.7 • , σ (θ oe con ) = 9.3 • ]. Hence, young and elderly participants performed equally in extension direction, whereas wrist position sense in flexion direction deteriorated with age (p < 0.01). Though unimpaired elderly adults did not benefit from stochastic stimulation, it cannot be deduced that individuals with more Georgarakis et al.Age-Dependent Wrist Position Sense Asymmetry severe impairments of their sensory system do not profit from this treatment. While the errors in estimating wrist position are symmetric in flexion and extension in elderly adults, young adults are more accurate when estimating wrist flexion, an effect that has not been described before.

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“…Improved signal detection by weak noise input has been studied not only in the field of physical events but also in biological systems, including human sensory systems [14 -16]. In the human somatosensory system, touch sensation of the hand can be enhanced by weak vibrotactile noise [6,12,17]. Collins and colleagues found that detection of a touch stimulus to the hand improved when vibration noise was added to the touch stimulus.…”

Section: Experiment-2mentioning

confidence: 99%

Validation of a Vibrotactile Stimulation System Using the Wii Remote for Studies of Tactile Sensitivity

Sugimoto¹,

Sasaki²

2017

TOPSYJ

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Background:Vibrotactile stimuli are widely used to study the functional characteristics of the haptic sense. Although many vibrotactile stimulators are commercially available, most are expensive. Objective:We developed a low-cost vibrotactile stimulation system using a Nintendo Wii Remote and a personal computer. In the present study, we examined the validity and accuracy of this vibrotactile stimulation system. Method:In the first experiment, we measured the linearity of vibration amplitude and changes in peak vibration frequency generated by the Wii Remote as a function of activation intensity. In the second experiment, the effect of vibrotactile stimuli applied to the dorsal surface of hand on two-point discrimination threshold at the index finger was examined in twelve participants. Results:The peak vibration frequency was about 150 Hz irrespective of vibration intensity, which would effectively activate fast adapting type II (FAII) cutaneous mechanical receptors. The two-point discrimination threshold measured at the third pad of the index finger decreased significantly when a near-threshold vibrotactile stimulus was applied to the dorsal hand, a response termed stochastic resonance (SR). These SR results are consistent with findings in the other sensory systems, such as auditory, visual, and somatosensory systems. Conclusion:This newly developed stimulation system produces controllable vibrotactile stimuli useful for study of the haptic sense.

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Effect of imperceptible vibratory noise applied to wrist skin on fingertip touch evoked potentials - an EEG study

Cited by 34 publications

References 40 publications

Stochastic resonance improves visuomotor temporal integration in healthy young adults

Stochastic resonance improves visuomotor temporal integration in healthy young adults

Age-Dependent Asymmetry of Wrist Position Sense Is Not Influenced by Stochastic Tactile Stimulation

Validation of a Vibrotactile Stimulation System Using the Wii Remote for Studies of Tactile Sensitivity

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