大鼠听-视整合的行为学表征

The behavioral presentations of audio-visual integration in rats

目的:探讨SD大鼠的朝向行为是否受多模态信息的影响。方法:SD大鼠随机分为声-光组合信号组和单独的声信号组,分别给予单模态信号和具有不同空间方位差别的声-光组合信号,观察大鼠的朝向行为。结果:当给予的声-光组合信号空间方位一致时,较单独光信号引导动物寻找隐藏平台的反应时间显著缩短,正确率提高,表现出明显的听-视整合效应。这种整合效应在光信号强度较弱时更为明显,其增强效应达到(87.3±8.5)%,明显高于光信号较强时的增强效应(27.6%,P<0.05)。结论:行为学的实验结果符合多模态整合规则。

Objective：To study whether the orientation behavior of rats is affected by multi-sensory information. Methods： SD rats were randomly divided into2 groups： the audio-visual integration group and pure audio group. The orientation behaviors of rats were observed after given single modal and multi-modal sensory cues with spatial disparities. Results： We found that when the temporal and spatial audio cues were coincident to a target visual cue, the rats had a markedly reduced reaction time and increased success rate in orientation behaviors; there was an obvious audio-visual integration effect. The integration effect was more obvious when the intensity of target visual cue was weak, with the enhancement efficiency being （87.3±8.5）%, significantly higher than that when the intensity of target visual cue was stronger （27. 6%, P〈0. 05）. Conclusion： Rat auditory visual integration behaviors also follow the multi-sensory integration rules.