Interlimb and interjoint transfer of a kinesthetic spatial aftereffect.

Abstract

Transfer of a kinesthetic spatial aftereffect from the stimulated to the nonstimulated arm (interlimb) and from the stimulated to the nonstimulated group of joints in a single arm (interjoint) has been investigated in 2 experiments. In each case the effects were compared with those occurring within a single arm (intralimb) and joint group (intrajoint). In both experiments the kinesthetic task was that of judging the horizontal after movement of the extended limb across a slanted edge. The results show that whereas there were large intralimb and intrajoint aftereffects, the small interjoint effect was significant in 1 of 2 cases, and that neither of 2 interlimb aftereffects achieved significance. The data are discussed in terms of their relevance for theoretical issues including the principal explanations of kinesthetic aftereffects.