视觉注意负荷对视听整合的影响

Effects of Visual Attention Load on Audiovisual Integration

摘要: 研究表明，视觉负荷减弱视听整合效应。然而，以往研究未考察低视觉负荷下是否发生视听整合效应。本研究结合Go/no-go和RSVP范式进行视觉注意负荷下的听觉、视觉辨别任务，通过操纵视觉注意负载，将实验分为低注意负载、高注意负载两个任务。平均反应时和正确率分析显示，低负荷下反应时和正确率分别低于和高于高负荷(P < 0.05)。竞争模型进一步的研究发现，低负荷下发生视听整合效应，高负荷下未发生视听整合效应，这可能是由于注意力资源的有限性所造成的。

Abstract: Studies have shown that visual load reduces the effect of audiovisual integration. However, it is not clear whether audiovisual integration occurred under low attention load conditions. Go/no-go and RSVP paradigms were combined to conduct an auditory/visual discrimination task under visual attention load in this research. By manipulating visual attention load, the experiment was divided into two tasks: low attention load and high attention load. The average response time and accuracy rate show that the response time and accuracy rate under low load are lower and higher than high load respectively (P < 0.05). Further research of the race model found that the audiovisual integration effect occurs under low load, but not occurs in high load, which may be affected by the limited attention resources.