University of Durham.
Uppsala University.
Child Dev. 2021 Jan;92(1):351-366. doi: 10.1111/cdev.13425. Epub 2020 Aug 7.
Adults' body representation is constrained by multisensory information and knowledge of the body such as its possible postures. This study (N = 180) tested for similar constraints in children. Using the rubber hand illusion with adults and 6- to 7-year olds, we measured proprioceptive drift (an index of hand localization) and ratings of felt hand ownership. The fake hand was either congruent or incongruent with the participant's own. Across ages, congruency of posture and visual-tactile congruency yielded greater drift toward the fake hand. Ownership ratings were higher with congruent visual-tactile information, but unaffected by posture. Posture constrains body representation similarly in children and adults, suggesting that children have sensitive, robust mechanisms for maintaining a sense of bodily self.
成人的身体表象受到多感官信息和对身体的了解（如可能的姿势）的限制。本研究（N=180）测试了儿童是否存在类似的限制。通过使用橡胶手错觉与成人和 6 至 7 岁儿童进行实验，我们测量了本体感受漂移（手部定位的指标）和手部感觉所有权的评分。假手与参与者自身的手要么一致，要么不一致。在所有年龄段，姿势的一致性和视觉触觉的一致性都会导致更大的向假手的漂移。当视觉触觉信息一致时，所有权评分更高，但不受姿势影响。姿势对儿童和成人的身体表象都有类似的限制，这表明儿童具有敏感、强大的机制来维持身体自我感。
