Adaptation of hand tracking to rotated visual coordinates

Abstract

A newly developed technique, allowing continuous recording of hand movements during the tracing of lines on a horizontal writing surface, was used to measure aftereffects induced by the exposure of subjects to a rotation (20 deg) of the visual-motor feedback from their own hands. All subjects exhibited large aftereffects following this exposure when tested on tracing lines at given orientations in an open-loop situation. If the exposure was restricted to the tracing of lines of particular orientations, the aftereffect was nevertheless observed in all the orientations subsequently tested. These results tend to demonstrate a generalization of the adaptive effect and to support the hypothesis of a "recalibration" mechanism for the observed adaptation. © 1975 Psychonomic Society, Inc.