![]() They also saw a virtual woman approaching them and stroking their virtual girl’s arm, while in the real world unseen experimenters touched the men’s flesh-and-blood arm.Īfter this preparation, the virtual visual angle of the men’s headsets changed, and the volunteers found themselves looking down on their avatars. When the volunteers looked down, in place of their own body they saw that of a 10-year-old girl in a tartan skirt. To see if the virtual world could be used to induce a similar illusion, Slater’s team gave 24 men a head-tracking video display to wear and recorded their heart rates. More recently, the illusion was replicated using full-body manikins: volunteers’ skin conducted more electricity when their manikin double was attacked with a knife, indicating fear. In the so-called rubber hand illusion, researchers found that if they put a rubber hand on a table in front of a person, and then stroked the rubber hand and the person’s own hand at the same time and in the same way, they could convince the volunteer that the rubber hand was their own. Over 10 years ago, body-transfer illusions were first demonstrated using a false hand. ![]() The finding highlights how far our sense of self and body image can be manipulated, and could lead to therapies for conditions of body-image distortion such as anorexia.
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