Psychology & Psychiatry

Dopamine, drugs, and depression

The neurotransmitter dopamine plays a major role in mental illnesses like substance abuse disorders and depressive disorders, as well as a more general role in reward and motivational systems of the brain. But there are still ...

Neuroscience

'Dimmer switch' for mood disorders discovered

Researchers at University of California, San Diego School of Medicine have identified a control mechanism for an area of the brain that processes sensory and emotive information that humans experience as "disappointment."

Parkinson's & Movement disorders

A new insight into Parkinson's disease protein

Abnormal clumps of certain proteins in the brain are a prominent feature of Parkinson's and other neurodegenerative diseases, but the role those same proteins might play in the normal brain has been unknown.

Neuroscience

Ketamine found to be unlikely to lead to addiction

A team of researchers at the University of Geneva has found that ketamine is unlikely to be addictive to people who use it for extended periods of time. In their paper published in the journal Nature, the group describes ...

Neuroscience

How the brain balances risk-taking and learning

If you had 10 chances to roll a die, would you rather be guaranteed to receive $5 for every roll ($50 total) or take the risk of winning $100 if you only roll a six?

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