Research that aims to map the activity of serotonin in the brain could revolutionize the use of antidepressants and behavioral therapy for people with mental illnesses.

The neurotransmitter serotonin has long been associated with mood, with drugs that boost the chemical in the brain helping to alleviate the symptoms of common illnesses such as depression and anxiety, but scientists lack a deep understanding of how it mediates different mood disorders.

By understanding the biology of serotonin, the hope is that drugs can be created that only target cells relevant to a particular disorder and behavioural therapies can be made more effective, reducing the need for antidepressants.

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