Why blind people cant see

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Blind people might not have perceptually driven visual imagery, but they use their other senses to encode spatial relationships pdf. For example, suppose you take off your high heels under the table at a restaurant. You are able to do this because you are encoding spatial information with your haptic system, or sense of touch.

The blind, too, use their other senses, such as hearing and touch, to form representations of the world. This shows that the sensations information delivered by organs like our eyes can be distinct from perceptions ideas about sensations formed by our brains. A similar memory encoding can be created with input from different senses.

You can get a sense of distance of something from your eyes, ears, hands, and even your nose. All of these senses can map to spatial information that is usually thought of as visual. Some people with no light perception still report seeing flashes of light, however. Damon Rose is a disability reporter for the BBC who has been totally blind since childhood. Although he has no light perception, he often gets flashes of light and color.

In fact, in this personal account of his blindness, he says that what he misses the most of being able to see is darkness. NonHour Sleep-Wake Disorder is a condition that can specifically affect this group. This is a circadian rhythm disorder affecting about 70 percent of people who are totally blind and have no light perception. Since these individuals are unable to tell the difference between light and dark, Non causes their sleep patterns to be significantly interrupted.

As ironic as it is, there is no clear-cut answer to this commonly asked question. Like with anything else, blindness is different in each individual.