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Virtual avatar lets you experience being a 4-year-old

作者:温岽    发布时间:2018-02-06 02:00:48    

THINK you’re all grown up? Placing yourself in the virtual body of a 4-year-old will send you right back to your halcyon days. Mel Slater of the University of Barcelona in Spain and colleagues put 30 people in a virtual reality (VR) environment in the body of a 4-year-old child or a scaled-down adult the same height as the child. The virtual body, which moved in sync with movements of the real body, could be viewed from a first-person perspective and in a mirror in the VR environment. All of the people judged virtual objects to be bigger than they actually were, but the people embodying a child made worse guesses (PNAS, DOI: 10.1073/pnas.1306779110). It has been argued that we reference our own body size to judge the size of objects. Now Slater’s team has shown that higher-level cognitive processes, perhaps memory of childhood, may also be at work. The researchers say that brain imaging studies would help them to understand the reorganisation that occurs when assimilating a new body. The motivation springs from a project looking at how to embody people in child-sized robots. “We thought we ought to look at the consequences of that first,

 

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