Abstract
This Paper presents a novel evaluation method for surgical robotics operation by analyzing user's brain activity. In this paper, the objective is to validate that the intraparietal sulcus which is the brain area activated significantly according to the change of the intuitive operability. In experiment, we measured the user's brain activity on the intraparietal sulcus by f-NIRS as the user controlled the virtual arm. The experiment was carried out with a variety of the kinematic position of virtual arm. As a result, the oxygenated hemoglobin activated significantly when the kinematics between master and slave is correspondent. We conclude that the oxygenated hemoglobin changed as the user perceives that the virtual arm belongs to the user's body.