"When you hear annoying noises
constantly that you cannot control, it may affect your emotional
processing systems," said Fatima Husain, speech and hearing science
professor at University of Illinois in US.
The researcher used
functional magnetic resonance imaging (fMRI) brain scans to better
understand how tinnitus affects the brain's ability to process emotions.
Three groups of participants were used in the study, people with
mild-to-moderate hearing loss and mild tinnitus; people with
mild-to-moderate hearing loss without tinnitus; and a control group of
age-matched people without hearing loss or tinnitus.
Activity in
the amygdala, a brain region associated with emotional processing, was
lower in the tinnitus and hearing-loss patients than in people with
normal hearing. Tinnitus patients also showed more activity than
normal-hearing people in two other brain regions associated with
emotion, the par hippocampus and the insula.
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