数量空间表征的特点:跨视听通道下的SNARC效应

从跨通道的角度入手，采用大小比较任务，对视听单通道及跨通道下数量空间表征的特点及表征过程中的相互影响进行探讨。结果发现，视觉通道和听觉通道均存在SNARC效应；在跨通道任务下，无论启动通道是视觉还是听觉通道，都表现出，当启动通道的数量大小信息与主通道的数量大小一致或无关时，主通道的SNARC效应没有显著变化；但当启动通道的数量大小信息与主通道不一致时，主通道的SNARC效应受到显著影响，表现为降低或消失。这进一步证明了SNARC效应受情境影响的特点，并发现在进行跨通道数量空间表征时，听觉通道的数量信息对视觉通道下的数量空间表征的影响大于视觉通道的数量信息对听觉通道下的数量空间表征的影响。

Characteristics of the Spatial Representation of Magnitude:SNARC Effect across Audiovisual Channels

Two experiments were conducted in the present study to examine the features of the spatial representation of magnitude through visual,auditory,and cross-modal perception.Numerical comparison tasks were adapted from a cross-modal perspective.Results in Experiment 1 revealed that SNARC effect was presented through either visual or auditory channel.For the cross-modal perception in Experiment 2,when the magnitude of number in the priming channel was consistent or irrelevant with that in the main channel,the SNARC effect was found to be similar to Experiment 1,whether the priming channel was a visual or auditory one.However,when the magnitude of number in the priming channel was inconsistent with that in the main channel,the SNARC effect of the main channel was found to be significantly reduced or even disappear.These results provided further evidence that SNARC effect would be affected by situations.In addition,this study also found that for the spatial representation of magnitude under cross-modal perception,numerical information from the auditory channel might have a greater influence on the spatial representation of magnitude in the visual channel rather than vice versa.