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A sneeze (also known as sternutation) is a semi-autonomous, convulsive expulsion of air from the lungs through the nose and mouth, usually caused by foreign particles irritating the nasal mucosa. A sneeze expels air forcibly from the mouth and nose in an explosive, spasmodic involuntary action.
The most obvious difference between a normal sneeze and a photic sneeze is the stimulus: normal sneezes occur due to irritation in the nasal cavity, while the photic sneeze can result from a wide variety of stimuli. Some theories are below. There is also a genetic factor that increases the probability of photic sneeze reflex. [13]
If yes, you likely suffer from a rare genetic condition that has been baffling scientists for millennia. Photic sneeze reflex—also known as autosomal compelling helio-ophthalmic outburst, or ...
Sometimes the signals in this system get crossed, and I think this may be why some people sneeze when they think about sex. [2] Another possible explanation concerns the existence of erectile tissue in the nose, which may become engorged during sexual arousal, triggering a sneeze. Cranial nerve zero (autonomic) is also located in the nasal cavity.
Is it possible to make yourself sneeze on command? Experts explain what a sneeze is, why it happens, and techniques to try to make yourself sneeze.
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Photic sneeze reflex — a sneeze caused by sudden exposure to bright light. Plantar reflex — in infants up to 1 year of age, a curling of the toes when something rubs the ball of the foot. Pupillary accommodation reflex — a reduction of pupil size in response to an object coming close to the eye.
Sneezing can be caused by crazy things like being too full, seeing a bright light, or even orgasm. For how common sneezing is — other animals sneeze too Why people say 'bless you' after sneezing