Donderi D C, Jolicoeur P, Berg I, Grimes R
Perception. 1985;14(6):691-709. doi: 10.1068/p140691.
Observers were trained to point with feedback to red and blue dots whose images had been laterally displaced in opposite directions by a reversible prism. On pretraining and posttraining trials the red and blue dots were aligned vertically in the absence of visual orientation cues. The alignment was modified by the pointing training on the posttraining trials. The colors were aligned in the direction of their prior prismatic displacement. One control experiment showed that the alignment aftereffect requires feedback during the pointing task. Another experiment in which observers pointed to the red and blue dots with opposite arms showed that pointing to both dots with the same arm was necessary to produce the alignment aftereffect. Changes in the perceived position of objects in the visual field occur when changes in perceived limb position cannot compensate for a sensorimotor conflict. Eye torsion or fixation displacements are proposed as alternative mechanisms mediating the aftereffect.
观察者经过训练，在有反馈的情况下指向红色和蓝色圆点，这些圆点的图像通过一个可逆棱镜在相反方向上发生了横向位移。在预训练和训练后试验中，红色和蓝色圆点在没有视觉方向线索的情况下垂直对齐。在训练后试验中，这种对齐方式通过指向训练得到了改变。颜色在其先前棱镜位移的方向上对齐。一个对照实验表明，对齐后效在指向任务期间需要反馈。另一个实验中，观察者用相反的手臂指向红色和蓝色圆点，结果表明用同一只手臂指向两个圆点对于产生对齐后效是必要的。当感知到的肢体位置变化无法补偿感觉运动冲突时，视野中物体的感知位置就会发生变化。眼球扭转或注视位移被认为是介导后效的替代机制。
