Enhancement of perceived visual intensity by auditory stimuli: A psychophysical analysis
Enhancement of perceived visual intensity by auditory stimuli: A psychophysical analysis
复制标题
DOI：
10.1162/jocn.1996.8.6.497
复制
发表时间：
1996-11-01
影响因子：
3.2
通讯作者：
Price, DD
中科院分区：
文献类型：
--
作者：
Stein, BE;London, N;Price, DD
对刺激强度的判断取决于它产生的中枢神经系统活动的水平。一般来说，假设这样的判断是基于沿着特定模式路径的活动。因此，视觉强度判断将基于单峰视觉活动。然而，许多神经元并不完全符合特定模式的类别，而是可能受到不止一种感觉模式的影响。通常，“多感官”效应非常明显。如果这些多感觉神经元参与感知强度等基本功能，那么非视觉（即听觉）提示的存在可能会对视觉提示的感知强度产生显着影响。本研究的结果与这样的假设是一致的。研究发现，短暂的宽带听觉刺激可以显着增强 LED 的感知强度。这种效果在最低视觉强度下最为明显，并且无论听觉提示的位置如何，效果都很明显。然而，它仅存在于视觉固定的位置。然而，尽管听觉提示具有显着影响，并且在不同视觉强度下具有不同的效果，但维持感知视觉强度之间比例的幂函数被保留。
Judgments of the intensity of a stimulus are dependent on the level of central nervous system activity it generates. Generally, it is assumed that such judgments are based on activity along modality-specific pathways. Thus, visual intensity judgments would be based on unimodal visual activity. However, many neurons do not fit neatly within modality-specific categories, but can be influenced by more than one sensory modality. Often the ''multisensory'' effect is quite pronounced. If these multisensory neurons participate in such fundamental functions as perceived intensity, the presence of a nonvisual (i.e., auditory) cue may have a significant effect on the perceived intensity of a visual cue. The results of the present study were consistent with such a hypothesis. A brief, broad-band auditory stimulus was found to significantly enhance the perceived intensity of an LED. The effect was most pronounced at the lowest visual intensities, and was evident regardless of the location of the auditory cue. However, it was present only at the location of visual fixation. Yet, despite the significant influence of the auditory cue, and its differential effect at different visual intensities, a power function that maintains the proportionality among perceived visual intensities was retained.