Psychology & Psychiatry

Happiness and the evolution of brain size

During human evolution, the size of the brain increased, especially in a particular part called the neocortex. The neocortex enables us to speak, dream and think. In search of the causes underlying neocortex expansion, researchers ...

Psychology & Psychiatry

New study shows how ketamine combats depression

In low doses, the anaesthetic drug ketamine has been shown to have a rapid effect on difficult-to-treat depression. Researchers at Karolinska Institutet report that they have identified a key target for the drug: specific ...

Neuroscience

How serotonin balances communication within the brain

The brain is steadily engaged in thought. These internal communications are also usually bombarded with external sensory events. Hence, the impact of the two neuronal processes need to be permanently fine-tuned to avoid their ...

Medical research

Scientists aim to learn how serotonin modulates behavior

In popular experience the story of how serotonin modulates the brain might seem simple: pop an antidepressant, serotonin levels go up, mood improves. But neuroscientists acknowledge how little they know about how the neurotransmitter ...

Neuroscience

Researchers explain how LSD changes perception

Psychedelic drugs such as LSD have a profound impact on human consciousness, particularly perception. Researchers at Yale and the University of Zurich provide new insight into the psychedelic effects of LSD on the brain and ...

Psychology & Psychiatry

Study explores a novel candidate for antidepressant treatment

According to the World Health Organization more than three hundred million people worldwide are affected by major depressive disorder. Unfortunately, the antidepressants commonly used to treat them only work for 50% of the ...

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