![]() ![]() We examined chimpanzees’ looking behaviors to atypical chimpanzee bodies in this study aiming at providing insights about their body representation. However, little research has been done in non-human animals. These results indicate more interests toward strange body parts, compared to typical parts, suggesting that chimpanzees might have a body representation that is sufficiently sensitive to detect these aspects of strangeness.Ī representation of typical bodies of animal species could help with species recognition, gesture and action understanding, and detection of abnormal situations such as injury. The looking times toward the misplaced parts were also longer than the normal parts, but the difference just failed to meet significance. Compared to the looking times toward the normal parts, chimpanzees had significantly longer looking times toward the human arms or legs. For either target, there were four conditions: “normal” condition as control, where all bodies were normal “misplaced” condition, where one arm or one leg was misplaced to an incorrect body location in each picture “replaced by a chimpanzee part” condition, where one arm or one leg was replaced by a chimpanzee leg or arm, respectively, in its original place in each picture and “replaced by a human part” condition, where one arm or one leg was replaced by a human arm or leg in each picture. ![]() We tested six chimpanzees with edited chimpanzee body pictures in eye-tracking tasks. This study investigated chimpanzee body representation by testing whether chimpanzees detect strangeness in body parts. ![]()
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