Vision and touch are automatically integrated for the perception of sequences of events
Vision and touch are automatically integrated for the perception of sequences of events
复制标题
DOI：
10.1167/6.5.2
复制
发表时间：
2006-01-01
影响因子：
1.8
通讯作者：
Ernst, Marc O.
中科院分区：
文献类型：
--
作者：
Bresciani, Jean-Pierre;Dammeier, Franziska;Ernst, Marc O.
本实验的目的是研究视觉和触觉事件序列的整合。受试者呈现视觉序列。灰和触觉水龙头同时进行，并指示计数。骨灰（会话1）或水龙头（会话2）。的数量。灰可以与抽头的数目相差+/-1。对于这两个会议，感知的事件数量显着影响的任务无关的模态中呈现的事件数量。触觉对视觉的影响比视觉对触觉的影响更大。有趣的是，触摸是更可靠的两个模态较少的变量估计时，单独提出。对于这两个会议，知觉估计变量较少时，刺激在两种方式比任务相关的方式单独提出。这些结果表明，即使一个信号是明确的任务无关，感官信息往往会自动集成跨模态。他们还认为，在整合过程中，每个感觉通道的相对权重取决于其相对可靠性。结果描述使用贝叶斯概率模型的多模态集成，占感官估计之间的耦合。
The purpose of the present experiment was to investigate the integration of sequences of visual and tactile events. Subjects were presented with sequences of visual. ashes and tactile taps simultaneously and instructed to count either the. ashes ( Session 1) or the taps ( Session 2). The number of. ashes could differ from the number of taps by +/-1. For both sessions, the perceived number of events was significantly influenced by the number of events presented in the task-irrelevant modality. Touch had a stronger influence on vision than vision on touch. Interestingly, touch was the more reliable of the two modalities-less variable estimates when presented alone. For both sessions, the perceptual estimates were less variable when stimuli were presented in both modalities than when the task-relevant modality was presented alone. These results indicate that even when one signal is explicitly task irrelevant, sensory information tends to be automatically integrated across modalities. They also suggest that the relative weight of each sensory channel in the integration process depends on its relative reliability. The results are described using a Bayesian probabilistic model for multimodal integration that accounts for the coupling between the sensory estimates.