Dynamic sounds capture the boundaries of peripersonal space representation in humans.
Dynamic sounds capture the boundaries of peripersonal space representation in humans.
复制标题
动态声音捕捉了人类中人周围空间表示的边界。
DOI：
10.1371/journal.pone.0044306
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Serino A
中科院分区：
文献类型：
--
作者：
Canzoneri E;Magosso E;Serino A
当外部刺激发生在身体周围的有限空间内时，我们的身体就会与外部刺激发生互动，即周围个人空间（PPS）。在灵长类动物的大脑中，特定的额顶叶区域负责PPS的多感官表征，通过整合发生在身体上和附近的触觉、视觉和听觉信息。动态刺激与PPS表征特别相关，因为它们可能指的是接近身体的潜在伤害。然而，缺乏研究运动刺激下PPS表征的行为任务。在此，我们提出了一个新的动态听觉触觉交互任务，以评估PPS在功能和生态上更有效的条件下的扩展。参与者在不同的延迟时间对手部的触觉刺激做出声音反应，这些延迟时间与任务无关的动态声音的开始时间不同，这些声音给人的印象是声源接近或远离受试者的手。结果表明，只要在一定距离内，即PPS表征范围内，移动的听觉刺激会加速手部触觉刺激的处理。当声音靠近时，听觉触觉的交互作用比声音远离时更强。这项研究提供了一种动态评估PPS表征的新方法：描述触觉处理与声音在空间中的位置之间关系的函数可以用来估计PPS边界的位置，沿着远近空间之间的空间连续体，这是一种有价值和生态意义的方式。
We physically interact with external stimuli when they occur within a limited space immediately surrounding the body, i.e., Peripersonal Space (PPS). In the primate brain, specific fronto-parietal areas are responsible for the multisensory representation of PPS, by integrating tactile, visual and auditory information occurring on and near the body. Dynamic stimuli are particularly relevant for PPS representation, as they might refer to potential harms approaching the body. However, behavioural tasks for studying PPS representation with moving stimuli are lacking. Here we propose a new dynamic audio-tactile interaction task in order to assess the extension of PPS in a more functionally and ecologically valid condition. Participants vocally responded to a tactile stimulus administered at the hand at different delays from the onset of task-irrelevant dynamic sounds which gave the impression of a sound source either approaching or receding from the subject’s hand. Results showed that a moving auditory stimulus speeded up the processing of a tactile stimulus at the hand as long as it was perceived at a limited distance from the hand, that is within the boundaries of PPS representation. The audio-tactile interaction effect was stronger when sounds were approaching compared to when sounds were receding. This study provides a new method to dynamically assess PPS representation: The function describing the relationship between tactile processing and the position of sounds in space can be used to estimate the location of PPS boundaries, along a spatial continuum between far and near space, in a valuable and ecologically significant way.
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DOI：
10.1073/pnas.1031751100
发表时间：
2003-05-13
影响因子：
11.1
作者：
Cooke, DF;Taylor, CSR;Graziano, MSA
通讯作者：
Graziano, MSA
影响因子：
2.5
作者：
COLBY, CL;DUHAMEL, JR;GOLDBERG, ME
通讯作者：
GOLDBERG, ME
影响因子：
56.9
作者：
GRAZIANO, MSA;YAP, GS;GROSS, CG
通讯作者：
GROSS, CG
影响因子：
1.3
作者：
Bruns, Patrick;Roeder, Brigitte
通讯作者：
Roeder, Brigitte
影响因子：
1.7
作者：
Farnè, A;Làdavas, E
通讯作者：
Làdavas, E