This film is intended to make known to any public the mechanisms of the functionment of the ear and its destrucrtion in case of exposition to excessive noises.

Damages due to the noise at a microscopic scale are recapitulated and put in parallel with the growing impediment.

Bases for prevention are established.

Intricate subject made accessible to medical instances as well as to tennagers for whom it is a common experience.

Which is the worst nuisance for humans, especially in modern cities ? It's noise! All the studies demonstrate is: noise reduces intellectual performances, makes us nervous and can cause important damage. Not only to our ears, but to our entire organism, including our heart! Matière Grise takes a look at the latest research, and tries to give solutions to protect oneself from it.