Body ownership in the space surrounding the body

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K14250
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 10040:Experimental psychology-related
• Research Institution: Tohoku University
• Principal Investigator: Saito Godai 東北大学, 電気通信研究所, 特任助教 (70823772)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: セルフタッチ錯覚 / 身体的自己 / からだの錯覚 / 身体錯覚 / 多感覚知覚

Outline of Final Research Achievements

The aim of the present study was to investigate how participants efficiently perceive information from limited sensory input around their own body and how they construct the resulting bodily self using the self-touch illusion paradigm, a type of bodily illusion. The results showed that illusory self-touch is not simply achieved by the synchronicity and asynchrony of tactile stimulation, but may also be represented by adaptively weighting the surrounding space of the body as an objective of information processing.

Free Research Field

実験心理学

Academic Significance and Societal Importance of the Research Achievements

本件研究の学術的意義は、セルフタッチ錯覚パラダイムを用いて、「自分で自分の手に触れている」という身体的自己の諸相を明らかにするところにあり、社会的意義は、身体的自己の障害の理解や支援、道具の操作や効率化など多岐にわたる分野への基礎的なデータを提供し得るところにある。