Development of visuo-auditory integration in space and time.
Development of visuo-auditory integration in space and time.
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DOI：
10.3389/fnint.2012.00077
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发表时间：
2012
影响因子：
3.5
通讯作者：
Burr D
中科院分区：
文献类型：
--
作者：
Gori M;Sandini G;Burr D
成年人能够最佳地整合多感官信息（例如，Ernst 和 Banks），而儿童直到 8-10 岁才整合多感官视觉触觉线索（例如，Gori 等人）。在此年龄之前，大小和方向视觉触觉判断出现强烈的单感觉优势，可能反映了模式之间的交叉感觉校准过程。人们普遍认为听觉主导时间知觉，而视觉主导空间知觉。在跨感官校准假设的框架内，我们通过儿童友好的空间和时间二分任务来研究空间和时间上的视觉听觉整合。测量单峰和双峰（冲突和非冲突）视听阈值和 PSE，并与贝叶斯预测进行比较。在时间域中，我们发现无论是儿童还是成人，听觉在感知时间和精度阈值方面都主导着双模态视觉听觉任务。相反，在视觉听觉空间任务中，12岁以下的儿童表现出明显的视觉优势（对于PSE），并且双峰阈值高于贝叶斯预测。只有在成人组中，双峰阈值才变得最佳。与之前的研究一致，我们的结果表明，类似成人的视觉听觉行为也发展得很晚。我们认为，空间的视觉优势和时间的听觉优势可以反映空间视音频任务中视觉的跨感官比较和时间视音频任务中听觉的跨感官比较。
Adults integrate multisensory information optimally (e.g., Ernst and Banks,) while children do not integrate multisensory visual-haptic cues until 8–10 years of age (e.g., Gori et al.,). Before that age strong unisensory dominance occurs for size and orientation visual-haptic judgments, possibly reflecting a process of cross-sensory calibration between modalities. It is widely recognized that audition dominates time perception, while vision dominates space perception. Within the framework of the cross-sensory calibration hypothesis, we investigate visual-auditory integration in both space and time with child-friendly spatial and temporal bisection tasks. Unimodal and bimodal (conflictual and not) audio-visual thresholds and PSEs were measured and compared with the Bayesian predictions. In the temporal domain, we found that both in children and adults, audition dominates the bimodal visuo-auditory task both in perceived time and precision thresholds. On the contrary, in the visual-auditory spatial task, children younger than 12 years of age show clear visual dominance (for PSEs), and bimodal thresholds higher than the Bayesian prediction. Only in the adult group did bimodal thresholds become optimal. In agreement with previous studies, our results suggest that also visual-auditory adult-like behavior develops late. We suggest that the visual dominance for space and the auditory dominance for time could reflect a cross-sensory comparison of vision in the spatial visuo-audio task and a cross-sensory comparison of audition in the temporal visuo-audio task.