How our brain filters sounds

When two identical sounds are repeated quickly, a filter reduces the attention that the brain directs to the second sound it hears. In people with schizophrenia, this ability to reduce the brain’s response to identical sounds does not function properly. But the question is: Why? Neuroscientists have been investigating the mechanism that lies behind this auditory sensory gating. Their results show that the filtering begins at the very beginning of the auditory stimuli processing.
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