Abstract
Recently, the researches of painless function needle are advanced to treat disabilities due to a cerebral disorder. The painless function needle can move freely into a brain, and it can give an electrical excitement and medicine to a brain cell directly. This needle must be flexible and accommodate to a living body. We use a hair for this purpose. The hair has working that defends bodying from the change of surroundings and the wound, and then it has a flexible, high reversibility. In the last report, we gave the hair a resin coating and metallic plating, and made neuron probe. In this report, the neuron probe was applied to the cell activity, and the penetration hole was formed in the hair.
