Mindless Load Changer: A Method for Manipulating Load Perception by Feedback of Myoelectricity Sensor Information

Various systems that present myoelectricity sensor information have been used to understand the load of the body. In this study, we verify the existence of a psychological phenomenon where a user’s load perception changes unconsciously by simply viewing myoelectricity sensor information. In addition, we propose a method, Mindless Load Changer, to manipulate load perception by presenting myoelectricity sensor information that differs from the actual measured sensor value and is simulated values as a specific load such as a high or low load. We implemented a prototype system and conducted experiments for weight perception when handling objects. The results demonstrate a psychological phenomenon that user’s load perception is changed unconsciously to match the displayed myoelectric value and the feasibility of the proposed method to manipulate the psychological phenomenon intentionally. This is the first study to focus on psychological phenomena caused by viewing myoelectricity sensor information while performing load-related tasks.