Multidimensional electrocutaneous stimulation.
Probing the subjective response to a five-parameter electrocutaneous stimulus has revealed a noisy perceptual space. A method for reducing the noise is hypothesized and experimentally tested by comparing the intensity discrimination thresholds along and off the energy gradient. Preliminary results show a reduction of the threshold of up to 60% when stimulating along the gradient. The method is exploited to implement an optimal intensity control in an electrotactile vision-substitution device.
Aiello
G L
GL
Dipartimento di Scienze Fisiche ed Astronomiche, Universitá di Palermo, Italy.
D000328:Adult; D000465:Algorithms; D001766:Blindness / Q000534:rehabilitation*; D004558:Electric Stimulation / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D012867:Skin / Q000294:innervation*; D013813:Therapy, Computer-Assisted; D014110:Touch / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology; D014796:Visual Perception / Q000502:physiology