A study in people fails to detect differences in the brain’s response to fear or anxiety, long thought to be controlled by different neural circuits.

Gamma delta T cells in the meninges of the brain release a cell signaling molecule that does more than protect mice from microbial pathogens.

Those who had developed PTSD appear to be less able to suppress unwanted memories—traumatic or not—suggesting a role for the general ability to control memory recall in the disorder.

A meta-analysis of more than 80 studies from the past four decades finds weak evidence to support the use of medicinal cannabis to treat anxiety, depression, and other mental health disorders.

Humans might also inherit such brain changes, a new study suggests.

In adult mice, neurogenesis increases social confidence by suppressing the activity of mature neurons.

Researchers found several hundred genes expressed in the human brain are tied to cognition or neuroses.

In the presence of competition, archerfish become more hesitant but accurate shooters.

Scientists are beginning to unravel the mechanisms behind the therapeutic effects of psychedelic drugs.

In a pair of clinical studies of psilocybin, the active ingredient in magic mushrooms, participants reported positive changes to their moods and outlooks.

Stoned, Anxious, The Deeper Genome, and Testosterone

Mice pairs with similar anxiety levels produce offspring more quickly than coupled animals with differing personalities, according to a recent study.

In mice, a transcriptional regulator, β-catenin, activates a microRNA-processing pathway in the nucleus accumbens to promote resilience to social stress.

A psychedelic compound in hallucinogenic mushrooms triggers brain activity characteristic of dream states.

A crustacean appears anxious after a stressful experience, but a drug can fix it, according to a new study.

Using psychedelic drugs does not increase one’s risk of developing mental health problems, researchers show.

A compound that targets a particular opioid receptor in the amygdala reduces the formation of PTSD-like systems in mice subjected to severe trauma.

A psychiatric drug in the water can cause perch to be less social, more voracious hunters.

Anxiety about rejection is associated with fewer infection-fighting T-cells.