Electrocutaneous Coding of Information

Abstract

Responses to electrocutaneous stimulation were investigated using the two point discrimination threshold as a means of providing information about the range of sensitivity to electrical stimuli.

A complete factorial design was used to investigate the effects of frequency, pulse width, and phase shift on the threshold distance at which two electrocutaneous stimuli can be discriminated. Results were analyzed by an analysis of variance.

The two point discrimination threshold was found to be significant for frequency, pulse width, and the interaction between pulse width and phase shift. Electrocutaneous sensitivity was determined by the level at which the minimum two point discrimination threshold occurred.

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References

Bach-y-Rita

Neurophysiological basis of a tactile vision substitution system. IEEE Transactions on Man-Machine Systems, 1970, MMS-11, 108–110.

Bekesy

G. V.

Interaction of powered sensory stimuli in peripheral nerves. Journal of Applied Physiology, 1963, 18, 1276–1284.

Bekesy

G. V.

Sensory Inhibition. Princeton, N.J.: Princeton Univ. Press, 1967.

Schmid

Temporal aspects of cutaneous interaction with two point electrical stimulation. J. Experimental Psychology, 1961, 61(5), 400–409.

Solomonow

A methodology for multi-channel artificial sensory communication via the tactile sense. Unpublished doctoral dissertation, University of California at Los Angeles, 1976.

Solomonow

Lyman

Freedy

Electrotactile two-point discrimination as a function of frequency, body site, laterality, and stimulation codes. Annuals of Biomedical Engineering, 1977, 5(1), 47–60.

Weinstein

Intensive and extensive aspects of tactile sensitivity as a function of body part, sex, and laterality. In Kenshalo

D. R.

(Ed.), The Skin Senses. Springfield, Ill.: C. C. Thomas, 1968.