Hybrid Robot Integrating Physical and Virtual Body Parts: Effects of Head and Arm Modalities on Social Presence. - Ikkaku Kawaguchi; Keiichi Ihara; Ayumi Ichikawa; Aoi Sakata; Yusuke Ashizawa; Shintaro Mori; Miki Hasegawa; Kosuke Fujikawa (HAI, 2025)