Evaluation of the Effect of Prime Stimulus on Sense of Agency in Stop Operation of the Object in Circular Motion
Shunsuke Hamasaki*, Qi An*, Masataka Murabayashi**, Yusuke Tamura*, Hiroshi Yamakawa*, Atsushi Yamashita*, and Hajime Asama*
*Department of Precision Engineering, The University of Tokyo
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
1-11-44 Akasaka, Minato-ku, Tokyo 107-8672, Japan
Human cognitive mechanisms have been studied for the design of user-friendly interfaces. One of the key issues is a sense of agency, which is defined as the sense that “I am the one who is causing this action.” The user interface is important; it can alter the feeling of sense of agency. In this research, we focus on a prime stimulus and evaluate the effect thereof by experiments with participants. A ball moves in a circle on a monitor at a constant speed and participants stop it by pushing a key. They were given both prime stimulus and feedback stimulus and indicated if they were the agent who stopped the ball, i.e., they felt a sense of agency. From the results of the experiment, we found that the prime stimulus can have both a positive and negative influence on the sense of agency when human prediction is unreliable.
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