Two-point tactual discrimination: a signal detection approach.
This investigation determined if subthreshold two-point aesthesiometer separations could be discriminated from one-point on the dorsal forearm. A fixed-based matching signal-detection technique was employed. The results indicated that subjects can reliably discriminate two-point separations as small as 2 mm when compared to one point.
D004193:Discrimination Learning; D006801:Humans; D008297:Male; D012684:Sensory Thresholds; D014110:Touch