Table 3. Perceived sensations elicited from small-scale pulse width modulation on all available channels.

Perceived sensations elicited from small-scale pulse width modulation on all available channels.. Constant pressure sensation was commonly associated with glabrous skin location on the perceived hand.

MedianUlnarRadial
Ch.Perceived
location
skin type
Small-scale
PW modulation
sensation
Ch.Perceived
location
skin type
Small-scale PW
modulation
sensation
Ch.Perceived
location skin
type
Small-scale PW
modulation sensation
M1HairyItch, tingle, pulseU1HairyConstant vibrationR1HairyTingling
M2GlabrousConstant pressureU2No responseR2HairyConstant pressure
M3GlabrousConstant pressureU3Glabrous, hairyTinglingR3HairyTingling
M4GlabrousConstant pressureU4HairyTinglingR4HairyHair movement, cotton ball
M5GlabrousConstant pressureU5GlabrousConstant pressure, Itch
M6DeepN.T.*U6Glabrous, hairyConstant pressure   
M7HairyConstant pressureU7GlabrousConstant pressure   
M8Glabrous, hairyConstant pressureU8N.T.  

*Not tested: usually stimulation on M6 resulted in uncomfortable sensations.

†Not tested: connector needed replacement. External connector lasted 1.6 years before requiring simple replacement.