Virtual hand illusion induced by visuomotor correlations.
Virtual hand illusion induced by visuomotor correlations.
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DOI：
10.1371/journal.pone.0010381
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发表时间：
2010-04-29
期刊：
影响因子：
3.7
通讯作者：
Slater M
中科院分区：
文献类型：
--
作者：
Sanchez-Vives MV;Spanlang B;Frisoli A;Bergamasco M;Slater M
我们的身体图式给人的主观印象是高度稳定的。然而，许多容易引起的幻觉说明了它的显著延展性。在橡胶手错觉中，通过对可见的橡胶手臂和隐藏的真实手臂进行同步的视觉和触觉刺激，可以唤起对橡胶手的错觉所有权。所有权与手臂位置向假手臂移动的本体感觉错觉同时发生。我们之前已经证明，当提供适当的同步视觉刺激时，这种所有权错觉加上本体感觉位移也会发生在手臂的虚拟3D投影上。我们的目的是探讨这些错觉（所有权和本体感觉位移）是否可以在没有触觉刺激的情况下，仅通过同步视觉运动刺激诱导。为了实现这一点，我们使用了一种数据手套，它使用传感器将手指的位置传输到同步而非异步条件下的虚拟投影手上。所有权错觉是通过问卷调查来衡量的。与所有权相关的问题在同步条件下给出的值明显大于异步条件。本体感觉位移提供了错觉的客观测量，在同步和异步条件下的中位值相差3.5 cm。此外，虚拟手臂的所有权感与漂移大小之间的相关性是显著的。我们的结论是，视觉和本体感觉信息之间的同步以及运动活动能够诱导对虚拟手臂的所有权错觉。这对身体所有权背后的大脑机制以及在治疗和康复中使用虚拟身体都有影响。
Our body schema gives the subjective impression of being highly stable. However, a number of easily-evoked illusions illustrate its remarkable malleability. In the rubber-hand illusion, illusory ownership of a rubber-hand is evoked by synchronous visual and tactile stimulation on a visible rubber arm and on the hidden real arm. Ownership is concurrent with a proprioceptive illusion of displacement of the arm position towards the fake arm. We have previously shown that this illusion of ownership plus the proprioceptive displacement also occurs towards a virtual 3D projection of an arm when the appropriate synchronous visuotactile stimulation is provided. Our objective here was to explore whether these illusions (ownership and proprioceptive displacement) can be induced by only synchronous visuomotor stimulation, in the absence of tactile stimulation. To achieve this we used a data-glove that uses sensors transmitting the positions of fingers to a virtually projected hand in the synchronous but not in the asynchronous condition. The illusion of ownership was measured by means of questionnaires. Questions related to ownership gave significantly larger values for the synchronous than for the asynchronous condition. Proprioceptive displacement provided an objective measure of the illusion and had a median value of 3.5 cm difference between the synchronous and asynchronous conditions. In addition, the correlation between the feeling of ownership of the virtual arm and the size of the drift was significant. We conclude that synchrony between visual and proprioceptive information along with motor activity is able to induce an illusion of ownership over a virtual arm. This has implications regarding the brain mechanisms underlying body ownership as well as the use of virtual bodies in therapies and rehabilitation.
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影响因子：
2.9
作者：
Slater M;Perez-Marcos D;Ehrsson HH;Sanchez-Vives MV
通讯作者：
Sanchez-Vives MV
影响因子：
3.4
作者：
van den Bos, E;Jeannerod, M
通讯作者：
Jeannerod, M
影响因子：
3.2
作者：
Slachevsky, A;Pillon, B;Dubois, B
通讯作者：
Dubois, B
DOI：
10.1073/pnas.0803768105
发表时间：
2008-09-02
影响因子：
11.1
作者：
Moseley, G. Lorimer;Olthof, Nick;Spence, Charles
通讯作者：
Spence, Charles
触摸橡胶手：身体所有权的感觉与多感官大脑区域的活动有关。
DOI：
10.1523/jneurosci.0800-05.2005
发表时间：
2005-11-09
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Ehrsson HH;Holmes NP;Passingham RE
通讯作者：
Passingham RE