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Why do we get Deaf when yawning?


Yawning Deafness
Yawning Deadness
Science Behind Yawning Deafness

 Ever wondered when you yawn your hearing diminishes for that period as if you've become temporarily deaf. One reason for this to happen is due to opening and closing of Eustachian tube which connects your ear to your throat. Another major reason for this to happen is
because yawning activates a small muscle called the tensor tympani. The role for this muscle is to keep tension on the tympanic membrane to reduce loud noises so you don't blow out your ears. Activation of the muscle further reduces your hearing, leading to temporary deafness.


Tympanic membrane
Inside of middle ear

Eustachian Tube: 

Its a narrow passage leading from the pharynx to the cavity of the middle ear, and permits the equalization of pressure on both sides of ear drum. 

Tympanic membrane:

 It is a membrane which forms part of the hearing organ, and vibrates in response to sound waves. In humans and other higher vertebrates it forms the eardrum, between outer and middle ear.

Things you could try

  • Here's something you could try out for fun. Try insulting a friend while he is yawning. An average time elapse for deafness is about 4-5 seconds. (not encouraging).
  • Note: Not everyone suffers from yawn deafness so be careful.
  • Same deafness occurs when blowing your nose.
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