Is The Weber Fraction a Function of Physical or Perceived Input?
Is The Weber Fraction a Function of Physical or Perceived Input?
复制标题
韦伯分数是物理输入还是感知输入的函数？
DOI：
10.1080/17470216408416356
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发表时间：
1964
影响因子：
1.7
通讯作者：
Richard L Gregory
中科院分区：
文献类型：
--
作者：
H. Ross;Richard L Gregory
众所周知，给定的物理输入（例如光或声音的强度，物体的长度或重量）并不总是引起相同的感觉。例如，箭头影响线条的感知长度（穆勒-莱尔错觉），大小影响物体的表观重量（大小-重量错觉）。通常假设微分阈值是刺激的物理强度的简单函数。然而，我们可能会问，差异阈值是否受到错觉的影响。为了回答这个问题，我们在一对条件下估计差分阈值，其中相关输入相同但看起来不同。利用大小-重量错觉，我们发现，对于一组小重量，重量的差异阈值大于对于一组较大且明显较轻的重量。
It is well known that a given physical input (e.g. intensity of light or sound, length or weight of an object) does not always give rise to the same sensation. For example, arrow heads affect the perceived length of lines (Muller-Lyer illusion) and size affects the apparent weight of an object (size-weight illusion). It is generally assumed that the differential threshold is a simple function of the physical intensity of the stimulus. We may however ask whether the differential threshold is affected by illusions. To try to answer this question we estimate differential thresholds under a pair of conditions in which the relevant input is the same but appears different. Using the size-weight illusion, we have found that the differential threshold for weight is greater for a set of small weights than for a set of larger and apparently lighter weights.