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#8 – Why do people sneeze when they look at a bright light?
About a third of all people sneeze uncontrollably when they go out to bright space, for example, if they walk out of the dark building.
Now, most scientists believe that the light ptarmic reflex may be the result of a crossing of nerves in the brain. The optic nerve, perceiving the light, is located next to the trigeminal nerve, controlling sneezing. When the optic nerve sends electrical impulses to the brain, the signal touches the trigeminal nerve, causing the brain to believe that the nose was irritated, and there is an urgent need to sneeze.
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