Jones L F, Burgess P R
Department of Physiology, University of Utah School of Medicine, Salt Lake City 84108, USA.
Somatosens Mot Res. 1998;15(3):190-9. doi: 10.1080/08990229870754.
When small and large objects of equal weight are lifted, the small object feels heavier than the large one (the size-weight illusion) and requires more effort to lift (the size-effort illusion). It has been suggested that these illusions result from neural gain changes designed to maintain acuity under different working conditions. If this suggestion is correct, a given mass should produce a larger increase in perceived weight or effort when added to the small object. This was found to be the case.
当提起重量相等的大小不同物体时，小物体比大物体感觉更重（大小-重量错觉），且提起时需要更大的力气（大小-用力错觉）。有人提出，这些错觉是由旨在在不同工作条件下保持敏锐度的神经增益变化引起的。如果这一观点正确，那么当将给定质量添加到小物体上时，应该会在感知重量或用力方面产生更大的增加。事实证明确实如此。
