Algom D, Marks L E
John B. Pierce Laboratory, New Haven, Connecticut 06519.
J Exp Psychol Hum Percept Perform. 1990 Nov;16(4):706-27. doi: 10.1037//0096-1523.16.4.706.
How does context affect basic processes of sensory integration and the implicit psychophysical scales that underlie those processes? Five experiments examined how stimulus range and response regression determine characteristics of (a) psychophysical scales for loudness and (b) 3 kinds of intensity summation: binaural loudness summation, summation of loudness between tones widely spaced in frequency, and temporal loudness summation. Context affected the overt loudness scales in that smaller power-function exponents characterized larger versus smaller range of stimulation and characterized magnitude estimation versus magnitude production. More important, however, context simultaneously affected the degree of loudness integration as measured in terms of matching stimulus levels. Thus, stimulus range and scaling procedure influence not only overt response scales, but measures of underlying intensity processing.
情境如何影响感觉整合的基本过程以及构成这些过程基础的内隐心理物理量表？五项实验研究了刺激范围和反应回归如何决定以下方面的特征：(a) 响度的心理物理量表，以及 (b) 三种强度总和：双耳响度总和、频率间隔较大的音调之间的响度总和以及时间响度总和。情境影响了显性响度量表，即较小的幂函数指数表征较大刺激范围与较小刺激范围的对比，以及数量估计与数量产生的对比。然而，更重要的是，情境同时影响了以匹配刺激水平衡量的响度整合程度。因此，刺激范围和标度程序不仅影响显性反应量表，还影响潜在强度处理的测量。
