Brain Activity during the Illusion of Motion by the Tendon Vibration when Presented of Objects in Visual: fNIRS Study

Abstract

Purpose) We investigate changes in brain activity during the illusinon of motion by vibrating the tendon of wrist extensor muscles associated with visual presentation of objects. (Method) The 11 subjects selected the illusion of motion that the intensity of 4 or more when you experience the illusion by the tendon vibration. In three conditions, and we do the extensor tendon in all conditions. Condition 1: No objects. Cndition 2: Presention objects in contact with the object distance if you bend the wrist. Condition 3: Presentation objects in no contact with the object distance if you bend the wrist.we measure the brain activity for functional near infrared spectroscopy. we use one-way analysis of variance to compare the different conditions, and then use t-test. (Result) In right parietal and right premotor cortex increased the brain activity in condition 2 than in the other two conditions. (Conclusion) Brain activity by the position of the object has changed. We think that elicited self-perception of movement based on the perception of the body. Also, the background of increasing activity in the right parietal and premotor cortex in condition 2, it is possible that the image evoked in contact with the object.