Systematic tactile error of judgment in finger-toe correspondence.

40 normal adults were tested for finger-toe correspondence identification. A systematic differential pattern of tactile judgment of errors for the five toes (with more errors in the case of the middle three toes) was obtained. The pattern was similar for both men and women and across right- and left-foot toes. These results are discussed in terms of poor sensory representation (or overlapping sensory pathways) of toes in the cerebral cortex.