Electrotactile and vibrotactile displays for sensory substitution systems

  title={Electrotactile and vibrotactile displays for sensory substitution systems},
  author={Kurt A. Kaczmarek and John G. Webster and Paul Bach-y-Rita and W. J. Tompkins},
  journal={IEEE Transactions on Biomedical Engineering},
Sensory substitution systems provide their users with environmental information through a human sensory channel (eye, ear, or skin) different from that normally used or with the information processed in some useful way. The authors review the methods used to present visual, auditory, and modified tactile information to the skin and discuss present and potential future applications of sensory substitution, including tactile vision substitution (TVS), tactile auditory substitution, and remote… 
Tactile Sensation Display with Electrotactile Interface
An ETCS is developed and effectiveness of the proposed system in terms of the perception of roughness of a surface by stimulating the palmar side of hand with different waveforms and the Perception of direction and loca- tion information through forearm is investigated.
Vestibular sensory substitution using tongue electrotactile display
This chapter will briefly review visual and auditory sensory substitution, as well as tactile feedback in robotic systems, followed by an extended discussion of vestibular sensory substitution.
Electrocutaneous Display with Receptor Selective Stimulations
Two methods for selectively stimulating the receptors are proposed, a method of changing the depth of stimulation by changing the weight of each electrode, using electrodes in an array form and an anodic electric current, in contrast to the cathodic current used in the transcutaneous electrical stimulation of the past methods.
HyVE: Hybrid Vibro-Electrotactile Stimulation for Sensory Feedback and Substitution in Rehabilitation
The results demonstrated that the subjects were able to discriminate the features of the two modalities within the hybrid stimulus, and that the cross-modality interaction was limited enough to allow better transmission of discrete information (messages) using hybrid versus single modality coding.
Tactile displays: Overview and recent advances
Polarity Effect in Electrovibration for Tactile Display
Experimental data is presented showing that electrovibratory perceptual sensitivity to positive pulses is less than that for negative or biphasic pulses and it is proposed that this disparity may be due to the asymmetric electrical properties of human skin.
HyVE—Hybrid Vibro-Electrotactile Stimulation—Is an Efficient Approach to Multi-Channel Sensory Feedback
It is shown that multiple HyVE units could be used to provide multi-channel sensory information with equivalent performance to single modality interfaces (vibro- or electro-tactile) larger in size and with better performance than vibrotactile interfaces with the same size.
Tactile Displays : a short overview and recent developments
In general tactation based interfaces may allow communication of visual information to the brain in situations where the visual or hearing system is already overloaded such as race car drivers, airplane pilots, operating rooms, virtual reality and tele-presence.
Multi-Channel Electrotactile Stimulation System for Touch Substitution: A Case Study
The preliminary results show high accuracies in discriminating different frequency levels and the mixed coding has substantially improved the spatial localization, important insights regarding the development of multichannel sensing and stimulation systems for feedback in prosthetics.


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  • Medicine
    The International journal of neuroscience
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An electrotactile sensory aid for profoundly deaf children, which displays acoustic information on the skin of the abdomen, via a belt of elect rotactile stimulators, and the resulting tactile patterns provide cues for recognizing environmental sounds, enhance the accuracy of lipreading, and enable the child to monitor his/her own voice.
An Electrotactile Display
An explorable electrotactile display has been constructed and tested. A thus far neglected sensation was identified and has been shown to be more useful than the more common electrotactile
Pain Sensations Associated with Electrocutaneous Stimulation
The dynamic range and the stability of the sensation magnitude have been measured under paste-free conditions and the conclusion is reached that electrocutaneous stimulation would be a viable alternative to mechanical stimulation in certain sensory substitution applications.
Investigating the MESA (multipoint electrotactile speech aid): the transmission of segmental features of speech.
Analysis of the data demonstrates that the tactile transform enables receivers to achieve excellent recognition of vowels in CVC context and the consonantal features of voicing and nasality, which leads to recognition performance in the combined condition (visual plus tactual) which far exceeds either reception condition in isolation.
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When tactile displays are designed, the stimulus parameters will have to be chosen according to the psychophysical functions as well as to the receptor properties, in order to obtain a device that is optimal from a discriminatory point of view.
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A brief introduction describes the alternative methods for replacement of the sense of hearing, including the educational procedures of sign language and lipreading, the medical procedure of cochlear
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It is concluded that the four channels work in conjunction at threshold to create an operating range for the perception of vibration that extends from at least 0.4 to greater than 500 Hz and may be determined by the combined inputs from four channels.
Properties of cutaneous mechanoreceptors in the human hand related to touch sensation.
The relationship between the stimulus amplitude and perceived intensity during sustained skin indentations did not match the corresponding stimulus response functions of SA units suggesting non-linear transformations within the central nervous system.
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  • C. Phillips
  • Medicine, Psychology
    Critical reviews in biomedical engineering
  • 1988
The topic is introduced with a conceptual definition of sensory feedback control applied to prosthetic systems. An overview of sensory physiology is then provided. Tactile sensation and audition are
Psychophysical studies relevant to the design of a digital electrotactile speech processor.
An electrotactile speech processor is proposed, which codes the speech amplitude as pulse width, the fundamental frequency as pulse rate, and the second formant frequency as electrode position, which is expected to arise from the intersubject differences in dynamic range and pulse rate discrimination.