Trigger model for guiding arm movement in circle drawing

We tried to guide human actions using galvanic vestibular stimulation (GVS), which might be a source of human behavior guidance without any attention. We tried to guide the trajectory of subject hands when they were continuously drawing circles. Previous work has mainly dealt with such unstable actions as walking and reaching in a standing posture. In this work, we verified the effects of GVS with a stable sitting posture under a head fixed condition in continuous circle drawing as a guided action. The results showed cases in which the hand is guided by GVS. From these experimental results, we hypothesize that GVS might trigger motion prediction for circle drawing. We confirmed the acceleration in the direction where a right and left imbalance arose when drawing a second circle after GVS. This suggests the possibility of a guiding hand trajectory and a triggered motion prediction by GVS in a stable posture where GVS cannot drastically change the balance perception.