Adaptation of the Two Arms to opposite Prism Displacements

Abstract

In normal subjects, the two arms were exposed separately to prismatic displacements of opposite sign, using the eye ipsilateral to the exposed arm. Opposite adaptive shifts were induced on each arm whether the eye ipsilateral to the arm (i.e. exposed to a displacement of the same sign as the arm) or the eye controlateral to the arm (i.e. exposed to a displacement of opposite sign) was used during testing. This result precludes the possible role of oculomotor signals in this type of prism adaptation.