Illusory Sense of Human Touch From a Warm and Soft Artificial Hand


To touch and be touched are very important to human development, well-being, and relationships. However, to those who have lost their arms and hands due to accident or war, touching becomes a significant concern that usually ends up in psychosocial problems and social stigma. In this paper, we demonstrate that the touch from a warm and soft rubber hand will be perceived by another person as if the bit were returning from a person's hand. We have a tendency to describe a 3-step method toward this goal. First, we have a tendency to made participants select artificial skin samples according to their most popular heat and softness characteristics. At space temperature, the popular warmth was found to be twenty eight.four at the skin surface of a soft silicone rubber material that has a Shore durometer value of thirty at the OO scale. Second, we developed a process to create a rubber hand replica of an individual's hand. To compare the skin softness of an individual's hand and artificial hands, a robotic indenter was used to produce a softness map by recording the displacement information when constant indentation force of 1 N was applied to 780 knowledge points on the palmar side of the hand. Results showed that an artificial hand with skeletal structure is as soft as a human hand. Lastly, the participants' arms were touched with human and artificial hands, however they were prevented from seeing the hand that touched them. Receiver operating characteristic curve analysis suggests that a heat and soft artificial hand will create an illusion that the bit is from somebody's hand. These findings open the probabilities for prosthetic and robotic hands that are life-like and are additional socially acceptable.

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