Tactile cognitionis a skin sensatio

Tactile cognitionis a skin sensation caused by the skin of a blind person in contact with external stimuli, including pressure and vibration on the skin. It is one of the main ways for blind people to perceive external things and compensate for visual defects. The sensitive parts of tactile receptors are the same as those of normal people, in the tips of fingers, palms, lips, and tongue. How to improve the sensitivity of these parts after training. The sense of touch plays an important role in the blind person's directional walking, recognizing external things and reading. According to the blind people's initiative to use touch, it can be divided into two types: active touch and passive touch. Blind people mainly use active touch to recognize external things in activities, rather than passively waiting for things to stimulate the skin. Blind people can't perceive the color, brightness, and things outside the range of the sense of touch using touch, but their sense of touch can perceive the temperature, hardness, and texture of things. In the education process, teachers should pay attention to training the active tactile sense of blind children to make them systematically and sequentially. Actively use the sense of touch to perceive things. At the same time, they should also protect their sense of touch. Try to avoid letting them come into contact with objects that are irritating, corrosive, or too hot or too cold.