Sense of object ownership and sense of agency

[Speaker] Sasaki, Kyoshiro:1,2
[Co-author] Yamada, Yuki:1
1:Kyushu University (Japan), 2:Japan Society for the Promotion of Science (Japan)

The present study examined the relationship between a sense of object ownership and a sense of agency for external events. Participants moved two-colored balls on a display by manipulating a mouse; in controlling one of the balls, there was a temporal delay between mouse and ball movement (delayed condition), while the participants controlled the other ball without the delay (non-delayed condition). Then, we asked to the participants to rate (1) the extent to which their mouse movement could causally control movement of each ball (sense of agency) and (2) the extent of a feeling of owning each ball (sense of object ownership). The results showed that both rating scores of the sense of agency and sense of object ownership were higher in the non-delayed condition than in the delayed condition. Our findings suggest that the sense of object ownership shares a common base with the sense of agency.
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