Odgaard Eric C, Arieh Yoav, Marks Lawrence E
John B. Pierce Laboratory, New Haven, Connecticut and Yale University School of Medicine, New Haven, Connecticut 06519, USA.
Cogn Affect Behav Neurosci. 2004 Jun;4(2):127-32. doi: 10.3758/cabn.4.2.127.
Two experiments investigated the effect of concurrently presented light on the perceived loudness of a low-level burst of white noise. The results suggest two points. First, white noise presented with light tends to be rated as louder than noise presented alone. Second, the enhancement in loudness judgments is resistant to two experimental manipulations: varying the probability that light accompanies sound and shifting from a rating method to a forced choice comparison. Both manipulations were previously shown to eliminate a complementary noise-induced enhancement in ratings of brightness. Whereas noise-induced enhancement of brightness seems to reflect a late-stage decisional process, such as a response bias, the present results suggest that light-induced enhancement of loudness may reflect an early-stage sensory interaction.
两项实验研究了同时呈现的光对低强度白噪声突发的感知响度的影响。结果表明两点。第一，与光同时呈现的白噪声往往比单独呈现的噪声被评为更响亮。第二，响度判断的增强不受两种实验操作的影响：改变光与声音伴随出现的概率，以及从评分方法转变为强制选择比较。先前的研究表明，这两种操作都能消除噪声诱导的亮度评分中的互补增强效应。虽然噪声诱导的亮度增强似乎反映了后期的决策过程，比如反应偏差，但目前的结果表明，光诱导的响度增强可能反映了早期的感觉相互作用。
