Experiments on Stochastic Resonance Toward Human Mimetic Tactile Data Processing

Ohka, Masahiro; Beceren, Kadir; Jin, Tao; Chami, Abdullah; Yussof, Hanafiah; Miyaoka, Tsuyoshi

doi:10.1007/s12369-011-0095-x

Cited by 14 publications

(20 citation statements)

References 17 publications

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“…1. The PEST method's algorithm was described in a preceding paper [14]. The signal generator program (with noise or without) is included in this system.…”

Section: A Experimental Apparatusmentioning

confidence: 99%

“…Normal and tangential sinusoidal vibrations were transmitted to the distal pad of their left index fmgers. Stimuli were controlled using a personal computer and the amplitudes were changed using the PEST procedure [14]. Each set of stimuli consisted of two tactile stimuli signals: a standard stimulus, which was constant throughout the experiments, and a comparison stimulus, which was varied.…”

Section: B Experimental Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Stochastic resonance occurring in tactile sensation of human finger

Beceren

Ohka

Miyaoka

2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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In this paper, we review the influence of external noise on human tactile sensation as outlined in prior and current studies. In the last few decades, researchers have found that, although noise is always considered detrimental, it provides the benefit of stochastic resonance (SR) phenomena. Based on previous studies, we investigate the effect of the SR phenomenon on human tactile sensation. In this context, we developed a system consisting of an experimental apparatus and a computer program, and performed a series of psychophysical experiments using different types of stimulus with normal vibration. The experimental results show that tactile sensation precision can be enhanced by an appropriate level of external noise. Furthermore, we introduce a neural network model composed of nonlinear neurons with a bi-stable equilibrium condition to clarify the result. Finally, we perform a sequence of psychophysical experiments with tangential vibration to clarify which conditions of vibration direction and stimulus size cause the strongest SR. The results show that the normal difference limen (DL) is significantly affected by stimulus point size. On the other hand, neither normal nor tangential DL is significantly affected by stimulus point size. Moreover, the characteristics of SR with normal vibration are quite different from those with tangential vibration.

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“…1. The PEST method's algorithm was described in a preceding paper [14]. The signal generator program (with noise or without) is included in this system.…”

Section: A Experimental Apparatusmentioning

confidence: 99%

Section: B Experimental Proceduresmentioning

confidence: 99%

Stochastic resonance occurring in tactile sensation of human finger

Beceren

Ohka

Miyaoka

2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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“…The purpose of the experiment is an initial recognition of the basic principle while the theoretical approach should verify subsequently its validity. It is very frequently observed particularly in neurophysiological experiments related with SR, see monograph [12] and papers [39][40][41][42][43] and others. Three popular examples of this type performed should be named: the mechanoreceptor cells of crayfish, the sensory hair cells of cricket, human visual perception.…”

Section: Methods Of Stochastic Resonance Investigationmentioning

confidence: 93%

Stochastic Resonance and Related Topics

Náprstek¹,

Fischer²

2017

Resonance

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The stochastic resonance (SR) is the phenomenon which can emerge in nonlinear dynamic systems. In general, it is related with a bistable nonlinear system of Duffing type under additive excitation combining deterministic periodic force and Gaussian white noise. It manifests as a stable quasiperiodic interwell hoppingbetweenbothstablestateswithasmall random perturbation. Classical definition and basic features of SR are regarded. The most important methods of investigation outlined are: analytical, semi-analytical, and numerical procedures of governing physical systems or relevant Fokker-Planck equation. Stochastic simulation is mentioned and experimental way of results verification is recommended. Some areas in Engineering Dynamics related with SR are presented together with a particular demonstration observed in the aeroelastic stability. Interaction of stationary and quasiperiodic parts of the response is discussed. Some nonconventional definitions are outlined concerning alternative operators and driving processes are highlighted. The chapter shows a large potential of specific basic, applied and industrial research in SR. This strategy enables to formulate new ideas for both development of nonconventional measures for vibration damping and employment of SR in branches, where it represents an operating mode of the system itself. Weaknesses and empty areas where the research effort of SR should be oriented are indicated.

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“…So far, it has been found that there are four kinds of mechanoreceptive units in Based on the previous studies, we investigated the influence of the SR phenomenon on human tactile sensation to elucidate the mechanism of SR. Our previous works [24] [25] show that tactile sensing precision is enhanced by proper noise; also, neither normal nor tangential difference threshold is significantly affected by stimulus point size in the low frequency condition.…”

Section: Introductionmentioning

confidence: 90%