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The sense of touch is spread through the whole body. Nerve endings in the skin and in other parts of the body send information to the brain.
There are four kinds of touch sensations that can be identified: cold, heat, contact, and pain. Hair on the skin increase the sensitivity and can act as an early warning system for the body. The fingertips have a greater concentration of nerve endings.
People who are blind can use their sense of touch to read Braille which is a kind of writing that uses a series of bumps to represent different letters of the alphabet.
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