Independence of perceptual and sensorimotor predictions in the size-weight illusion
Independence of perceptual and sensorimotor predictions in the size-weight illusion
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DOI：
10.1038/76701
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发表时间：
2000-07-01
影响因子：
25
通讯作者：
Beltzner, MA
中科院分区：
文献类型：
--
作者：
Flanagan, JR;Beltzner, MA
两个重量相等的物体中较小的那个在举起时被判定为较重。在这里，我们反驳了一个主要的假设，即这种尺寸-重量错觉是由预测和实际感官反馈之间的不匹配引起的。我们发现，当被试交替举起同样重的大小物体时，他们学会了根据物体的真实重量精确地调整指尖的力量，从而表现出准确的感觉运动预测。size-weight。尽管如此，错觉仍然存在，这表明错觉可能是由高级认知和知觉因素引起的，并表明感觉运动系统可以独立于认知/知觉系统运行。
The smaller of two equally weighted objects is judged to be heavier when lifted. Here we disproved a leading hypothesis that this size-weight illusion is caused by a mismatch between predicted and actual sensory feedback. We showed that when subjects repeatedly lifted equally heavy large and small objects in alternation, they learned to scale their fingertip forces precisely for the true object weights and thus exhibited accurate sensorimotor prediction. The size-weight. illusion nevertheless persisted, suggesting that the illusion can be caused by high-level cognitive and perceptual factors and indicating that the sensorimotor system can operate independently of the cognitive/perceptual system.