Resumen de Why some hate chewing noises
Now Sukhbinder Kumar and his team at Newcastle University, UK, have carried out a series of tests on 20 volunteers with severe misophonia, as well as 22 people who don't have it. Both groups listened to neutral noises, like the sound of rain; unpleasant sounds, such as a baby crying; and sounds that were triggers for the misophonics, such as chewing or breathing noises. While both groups reacted to the neutral and unpleasant sounds in a similar way, the misophonic group experienced increased heart rates and skin conductance--both signs of the body's fight-or-flight response--when they heard trigger sounds. Brain scans revealed that, when the trigger sounds were played, the misophonics had heightened activity in the anterior insular cortex, an area that helps determine which things they should pay attention to.
