When a grasped object is larger or smaller than expected, haptic feedback automatically recalibrates motor planning. Intriguingly, haptic feedback can also affect 3D shape perception through a process called depth cue reweighting. Although signatures of cue reweighting also appear in motor behavior, it is unclear whether this motor reweighting is the result of upstream perceptual reweighting, or a separate process. We propose that perceptual reweighting is directly related to motor control; in particular, that it is caused by persistent, systematic movement errors that cannot be resolved by motor recalibration alone. In Experiment 1, we inversely varied texture and stereo cues to create a set of depth-metamer objects: when texture specified a deep object, stereo specified a shallow object, and vice versa, such that all objects appeared equally deep. The stereo-texture pairings that produced this perceptual metamerism were determined for each participant in a matching task (Pre-test). Next, participants repeatedly grasped these depth metamers, receiving haptic feedback that was positively correlated with one cue and negatively correlated with the other, resulting in persistent movement errors. Finally, participants repeated the perceptual matching task (Post-test). In the condition where haptic feedback reinforced the texture cue, perceptual changes were correlated with changes in grasping performance across individuals, demonstrating a link between perceptual reweighting and improved motor control. Experiment 2 showed that cue reweighting does not occur when movement errors are rapidly corrected by standard motor adaptation. These findings suggest a mutual dependency between perception and action, with perception directly guiding action, and actions producing error signals that drive motor and perceptual learning.

当抓取的物体大于或小于预期时，触觉反馈会自动重新校准运动规划。有趣的是，触觉反馈还可以通过称为深度提示重新加权的过程影响 3D 形状感知。尽管提示重新加权的特征也出现在运动行为中，但尚不清楚这种运动重新加权是上游感知重新加权的结果，还是一个单独的过程。我们提出感知重新加权与运动控制直接相关；尤其是，它是由持续的、系统的运动错误引起的，仅靠运动重新校准是无法解决的。在实验 1 中，我们反向改变纹理和立体线索来创建一组深度同色异谱对象：当纹理指定一个深对象时，立体指定一个浅对象，反之亦然，这样所有的物体看起来都一样深。在匹配任务（预测试）中为每个参与者确定产生这种感知同色异谱的立体纹理配对。接下来，参与者反复掌握这些深度同色异谱，接收与一个线索正相关而与另一个线索负相关的触觉反馈，从而导致持续的运动错误。最后，参与者重复感知匹配任务（后测试）。在触觉反馈加强纹理提示的情况下，感知变化与个体的抓握能力变化相关，证明了感知重新加权和改善运动控制之间的联系。实验 2 表明，当通过标准运动适应快速纠正运动错误时，不会发生提示重新加权。