Imagine Your Crossed Hands as Uncrossed: Visual Imagery Impacts the Crossed-Hands Deficit.

IF 1.8 4区 心理学 Q3 BIOPHYSICS Multisensory Research Pub Date : 2021-10-22 DOI:10.1163/22134808-bja10065
Lisa Lorentz, Kaian Unwalla, David I Shore
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Abstract

Successful interaction with our environment requires accurate tactile localization. Although we seem to localize tactile stimuli effortlessly, the processes underlying this ability are complex. This is evidenced by the crossed-hands deficit, in which tactile localization performance suffers when the hands are crossed. The deficit results from the conflict between an internal reference frame, based in somatotopic coordinates, and an external reference frame, based in external spatial coordinates. Previous evidence in favour of the integration model employed manipulations to the external reference frame (e.g., blindfolding participants), which reduced the deficit by reducing conflict between the two reference frames. The present study extends this finding by asking blindfolded participants to visually imagine their crossed arms as uncrossed. This imagery manipulation further decreased the magnitude of the crossed-hands deficit by bringing information in the two reference frames into alignment. This imagery manipulation differentially affected males and females, which was consistent with the previously observed sex difference in this effect: females tend to show a larger crossed-hands deficit than males and females were more impacted by the imagery manipulation. Results are discussed in terms of the integration model of the crossed-hands deficit.

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想象你交叉的双手没有交叉:视觉意象对双手交叉缺陷的影响
与环境成功互动需要准确的触觉定位。虽然我们似乎可以毫不费力地对触觉刺激进行定位,但这种能力背后的过程却十分复杂。双手交叉时,触觉定位能力会受到影响。这种缺陷源于以躯体坐标为基础的内部参照系与以外部空间坐标为基础的外部参照系之间的冲突。之前支持整合模型的证据采用了对外部参照框架的操作(例如蒙住参与者的眼睛),通过减少两个参照框架之间的冲突来减轻这种缺陷。本研究通过要求蒙住双眼的被试将交叉的手臂想象成未交叉的手臂,对这一发现进行了扩展。这种想象操作使两个参照框架中的信息趋于一致,从而进一步降低了交叉双手障碍的程度。这种想象操作对男性和女性的影响不同,这与之前观察到的这种效应的性别差异一致:女性往往比男性表现出更大的双手交叉障碍,而女性受到想象操作的影响更大。研究结果将根据双手交叉障碍的整合模型进行讨论。
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来源期刊
Multisensory Research
Multisensory Research BIOPHYSICS-PSYCHOLOGY
CiteScore
3.50
自引率
12.50%
发文量
15
期刊介绍: Multisensory Research is an interdisciplinary archival journal covering all aspects of multisensory processing including the control of action, cognition and attention. Research using any approach to increase our understanding of multisensory perceptual, behavioural, neural and computational mechanisms is encouraged. Empirical, neurophysiological, psychophysical, brain imaging, clinical, developmental, mathematical and computational analyses are welcome. Research will also be considered covering multisensory applications such as sensory substitution, crossmodal methods for delivering sensory information or multisensory approaches to robotics and engineering. Short communications and technical notes that draw attention to new developments will be included, as will reviews and commentaries on current issues. Special issues dealing with specific topics will be announced from time to time. Multisensory Research is a continuation of Seeing and Perceiving, and of Spatial Vision.
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