Body ownership and experiential ownership in the self-touching illusion

Frontiers in Psychology
Caleb LiangYen-Tung Lee

Abstract

We investigate two issues about the subjective experience of one's body: first, is the experience of owning a full-body fundamentally different from the experience of owning a body-part?Second, when I experience a bodily sensation, does it guarantee that I cannot be wrong about whether it is me who feels it? To address these issues, we conducted a series of experiments that combined the rubber hand illusion (RHI) and the "body swap illusion." The subject wore a head mounted display (HMD) connected with a stereo camera set on the experimenter's head. Sitting face to face, they used their right hand holding a paintbrush to brush each other's left hand. Through the HMD, the subject adopted the experimenter's first-person perspective (1PP) as if it was his/her own 1PP: the subject watched either the experimenter's hand from the adopted 1PP, and/or the subject's own hand from the adopted third-person perspective (3PP) in the opposite direction (180°), or the subject's full body from the adopted 3PP (180°, with or without face). The synchronous full-body conditions generate a "self-touching illusion": many participants felt that "I was brushing my own hand!" We found that (1) the sense of body-part ownership and the sense of full-bod...Continue Reading

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Citations

Oct 5, 2018·Frontiers in Psychology·Caleb LiangHsu-Chia Huang
Feb 3, 2018·Scientific Reports·Wen-Yeo ChenCaleb Liang
Jun 5, 2015·Frontiers in Psychology·Francesco Pavani, Giovanni Galfano
Jan 28, 2021·Frontiers in Robotics and AI·Alexander ToetJan B F van Erp
May 21, 2021·Scientific Reports·Caleb LiangYen-Tung Lee

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