Psychology & Psychiatry

Study Sheds Light on a Potential Cause of Insomnia

(PhysOrg.com) -- In a study at Emory University, investigators have shed new light on a potential cause of insomnia, demonstrating that products of the immune system called cytokines may be the culprits.

Genetics

First human gene implicated in regulating length of human sleep

Scientists have discovered the first gene involved in regulating the optimal length of human sleep, offering a window into a key aspect of slumber, an enigmatic phenomenon that is critical to human physical and mental health.

Neuroscience

Afternoon slump in reward response

Activation of a reward-processing brain region peaks in the morning and evening and dips at 2 p.m., finds a study of healthy young men published in The Journal of Neuroscience. This finding may parallel the drop in alertness ...

Psychology & Psychiatry

Fear, safety and the role of sleep in human PTSD

The effectiveness of post-traumatic stress disorder (PTSD) treatment may hinge significantly upon sleep quality, report researchers at the University of California, San Diego School of Medicine and Veterans Affairs San Diego ...

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Sleep disorder

A sleep disorder (somnipathy) is a medical disorder of the sleep patterns of a person or animal. Some sleep disorders are serious enough to interfere with normal physical, mental and emotional functioning. A test commonly ordered for some sleep disorders is the polysomnogram.

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