Hand Cooling Enhances the Proprioceptive Drift during Rubber Hand Illusion  

作　　者：Masanori Sakamoto Yuta Akaike Kazuya Tatsumi Hirotoshi Ifuku Masanori Sakamoto;Yuta Akaike;Kazuya Tatsumi;Hirotoshi Ifuku(Division of Health and Physical Education, Graduate School of Education, Kumamoto University, Kumamoto City, Japan;Lifelong Sports and Welfare Course, Faculty of Education, Kumamoto University, Kumamoto City, Japan)

机构地区：[1]Division of Health and Physical Education, Graduate School of Education, Kumamoto University, Kumamoto City, Japan [2]Lifelong Sports and Welfare Course, Faculty of Education, Kumamoto University, Kumamoto City, Japan

出　　处：《Journal of Behavioral and Brain Science》2024年第7期210-226,共17页行为与脑科学期刊（英文）

摘　　要：Background: The neural representation of the body is easily altered by integrating multiple sensory signals in the brain. The “Rubber Hand Illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, ownership of a rubber hand is temporarily induced. It was shown that external and continuous cooling of the palm enhanced the RHI, suggesting an association between altered the autonomic nervous system regulation and altered the sense of ownership of a specific limb. Purpose: To investigate whether artificially cooling the entire hand for a short period affects the magnitude of the illusion. Methods: Participants immersed their entire hand in cool, cold, or warm water for 1 min before the RHI procedure. Results: We found that cooling the entire hand enhanced the proprioceptive drift during the RHI but not the subjective feeling of ownership. In contrast, warming and intense cooling of the entire hand did not affect the RHI strength. Conclusion: Our results suggest that transient and moderate cooling of the entire hand was sufficient in enhancing the illusory disembodiment of one’s own hand.Background: The neural representation of the body is easily altered by integrating multiple sensory signals in the brain. The “Rubber Hand Illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, ownership of a rubber hand is temporarily induced. It was shown that external and continuous cooling of the palm enhanced the RHI, suggesting an association between altered the autonomic nervous system regulation and altered the sense of ownership of a specific limb. Purpose: To investigate whether artificially cooling the entire hand for a short period affects the magnitude of the illusion. Methods: Participants immersed their entire hand in cool, cold, or warm water for 1 min before the RHI procedure. Results: We found that cooling the entire hand enhanced the proprioceptive drift during the RHI but not the subjective feeling of ownership. In contrast, warming and intense cooling of the entire hand did not affect the RHI strength. Conclusion: Our results suggest that transient and moderate cooling of the entire hand was sufficient in enhancing the illusory disembodiment of one’s own hand.

关 键 词：Hand Temperature COOLING Rubber Hand Illusion OWNERSHIP Proprioceptive Drift 

分 类 号：F13[经济管理—世界经济]