Body ownership and the four-hand illusion
| Autor: | Hsu-Chia Huang, Caleb Liang, Wen-Yeo Chen, Yen-Tung Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Visual perception
media_common.quotation_subject Posture Illusion lcsh:Medicine Sitting 050105 experimental psychology Article Key (music) 03 medical and health sciences Face-to-face 0302 clinical medicine Body Image Humans 0501 psychology and cognitive sciences lcsh:Science media_common Human Body Multidisciplinary Proprioception Index (typography) lcsh:R 05 social sciences Perspective (graphical) Hand Illusions Visual Perception lcsh:Q Psychology 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-17 (2018) |
| ISSN: | 2045-2322 |
| Popis: | Recent studies of the rubber hand illusion (RHI) have shown that the sense of body ownership is constrained by several factors and yet is still very flexible. However, exactly how flexible is our sense of body ownership? In this study, we address this issue by investigating the following question: is it possible that one may have the illusory experience of owning four hands? Under visual manipulation, the participant adopted the experimenter’s first-person perspective (1PP) as if it was his/her own. Sitting face to face, the participant saw four hands—the experimenter’s two hands from the adopted 1PP together with the subject’s own two hands from the adopted third-person perspective (3PP). We found that: (1) the four-hand illusion did not occur in the passive four-hand condition. (2) In the active four-hand condition, the participants tapped their index fingers, imitated by the experimenter. When tactile stimulations were not provided, the key illusion was not induced, either. (3) Strikingly, once all four hands began to act with the same pattern and received synchronous tactile stimulations at the same time, many participants felt as if they had two more hands. These results show that the sense of body ownership is much more flexible than most researchers have suggested. |
| Databáze: | OpenAIRE |
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