Annals of Biomedical Engineering

, Volume 5, Issue 1, pp 47–60 | Cite as

Electrotactile two-point discrimination as a function of frequency, body site, laterality, and stimulation codes

  • Moshe Solomonow
  • John Lyman
  • Amos Freedy


The feasibility of frequency modulated two-point discrimination as a design concept for electrocutaneous sensory substitution display has been studied. Three stimulation techniques were tested on human subjects: spatial stimulus, temporal stimulus, and frequency on frequency stimulus. The frequency on frequency technique yielded the lowest threshold when compared to the temporal and spatial techniques. In addition, some of the characteristic behavior of cutaneous sensation is discussed relating two-point discrimination with frequency, body sites, and stimulation codes. Implications of the results for clinical applications are reviewed.


Clinical Application Human Subject Lower Threshold Design Concept Frequency Stimulus 
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Copyright information

© Academic Press, Inc. 1977

Authors and Affiliations

  • Moshe Solomonow
    • 1
  • John Lyman
    • 1
  • Amos Freedy
    • 1
  1. 1.Biotechnology LaboratoryUniversity of CaliforniaLos Angeles

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