How can blind people dream
How do blind people dream?
For most people, dreams are colorful and scenic. But how do people with visual impairment dream? Do you see pictures in your sleep?
Why does the brain even produce dreams?
One thing is certain: each of us dreams. Some still remember it in the morning, others don't. The nocturnal films mainly take place in the so-called REM sleep phase (Rapid Eye Movement). During this time, the eyes move quickly back and forth under the closed lids. The brain is running at full speed. In adults, this condition accounts for around 20 percent of night sleep. Many scientists assume that in this phase our brain processes what happened during the day and stores new knowledge. Whether dreams reflect mental life or are just meaningless nerve signals has not yet been clarified with certainty.
How do blind people dream?
Blind and visually impaired people also process their day-to-day experiences at night - but in the way they perceived them themselves. Other sensory impressions such as touch, smells, tastes and noises play a larger role. However, blind people are more likely to have nightmares. This is proven by Danish research. According to neuroscientists, this is due to the increased threats and dangers that non-sighted people face in everyday life. Above all, fear triggers scenarios such as being run over by a car, falling into a hole or losing the guide dog. These fears reappear in sleep.
Do blind people actually see pictures in dreams?
People who have only lost their eyesight due to illness or an accident usually still remember old visual impressions. So there are pictures in her dreams. The amazing thing is that some of them even see events in their dreams that only happened after they went blind. However, the longer a person has been blind, the more their optical dream images fade.
However, there is evidence that blind people from birth can have visual impressions while they sleep. For example, blind participants in a Portuguese study drew scenes that they saw in a dream. The drawings came very close to the reality of sighted people. The researchers also observed in these people that their brain area responsible for optical processing was active during dreaming.
Are the visual impressions of blind people similar to those of sighted people?
Probably not. Using information that blind people receive from birth through other senses, they create their own images. Experts assume that touching and listening create a spatial idea of size and a feeling for the nature of objects and people. The brain seems to be able to create an optical impression from this. Some non-seeing people even remember colors from their dreams. Scientists suspect that the color impressions differ from those of the sighted - especially since those affected can understandably describe them only with difficulty.
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