Patterning of simultaneous electropulses is likely not a fruitful approach to tactual communication due to drastic drops in recognition accuracy with increased stimulation sites.
Recognition accuracy was observed on 25 Ss with variation in the type placement (single- and multi-body regions) when varying numbers (1, 2, 3, 5, and 7) of electrode sites were pulsed simultaneously from among a 10-electrode array. Accuracy dropped drastically with increased number of sites pulsed and was most pronounced when the electrode array was restricted to a single region of the body. The accumulated data appear to cast serious doubt on the use of patterning of simultaneous electropulses as a fruitful approach to tactual communication. An alternative approach was proposed.
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Brown et al. (1967) studied this question.
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