Psychology & Psychiatry

New method to identify causal mechanisms in depression

People with major depressive disorder have alterations in the activity and connectivity of brain systems underlying reward and memory, according to a new study in Biological Psychiatry: Cognitive Neuroscience and Neuroimaging. ...

Psychology & Psychiatry

Head injury does not worsen drinking behavior in heavy drinkers

Head injury, which often damages brain regions overlapping with those involved in addictive behaviors, does not worsen drinking behavior in people with heavy alcohol use, according to a new study published in Biological Psychiatry: ...

Psychology & Psychiatry

Research links locus coeruleus activity with hyperarousal in PTSD

A new study in Biological Psychiatry has linked signs of heightened arousal and reactivity—a core symptom of posttraumatic stress disorder (PTSD)—to overactivity of the locus coeruleus (LC), a brain region that mediates ...

Psychology & Psychiatry

Researchers identify gene that influences nicotine dependence

A DNA variant—located in the DNMT3B gene and commonly found in people of European and African descent—increases the likelihood of developing nicotine dependence, smoking heavily, and developing lung cancer, according ...

Psychology & Psychiatry

Study links brain inflammation to suicidal thinking in depression

Patients with major depressive disorder (MDD) have increased brain levels of a marker of microglial activation, a sign of inflammation, according to a new study in Biological Psychiatry by researchers at the University of ...

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