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Statistical inference of body representation in the macaque brain| old_uid | 17517 |
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| title | Statistical inference of body representation in the macaque brain |
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| start_date | 2019/02/25 |
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| schedule | 11h |
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| online | no |
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| summary | The sense and agency of one’s own body is a pillar of self-awareness and could be investigated by inducing human illusions of artificial objects as part of the self. Here, we present a non-human primate version of body illusion that allowed us to determine its computational and neuronal mechanisms. We implemented a virtual reality system in a reaching task in monkeys and combined a casual inference model to establish an objective and quantitative signature for monkey’s body representation. Similar to humans, monkeys were more likely to perceive an external object as part of the self when the dynamics of visual input was closer to proprioceptive signals and features of the object resembled pre-existing body representation. Neural signals in monkey’s premotor cortex reflected the strength of illusion and the likelihood of misattributing the illusory hand to oneself, thus revealing a cortical representation of body schema and self-awareness. |
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| responsibles | Blancho |
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