Rare sleep disorder common among veterans with PTSD

Military veterans with post-traumatic stress disorder or concussion suffer from a thrashing form of sleep behavior at a rate that is far higher than the general population, according to a new study. Researchers next want to probe whether the sleep disorder might provide an early signal of the development of neurodegenerative conditions such as Parkinson's disease.

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Why we crave junk food after a sleepless night

When you're sleep deprived, you reach for doughnuts and pizza. A new study has figured out why you crave more calorie-dense, high-fat foods after a sleepless night. Blame it on your sleepy nose — or olfactory system. First, it goes into hyperdrive, sharpening the food odors for the brain. But then there is a breakdown in communication with brain areas that receive food signals. Then decisions about what to eat change.

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Manipulating specific brain waves in sleep shifts balance between learning or forgetting a new skill

Distinct patterns of electrical activity in the sleeping brain may influence whether we remember or forget what we learned the previous day, according to a new study. The scientists were able to influence how well rats learned a new skill by tweaking these brainwaves while animals slept, suggesting potential future applications in boosting human memory or forgetting traumatic experiences, the researchers say.

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Amputees merge with their bionic leg


Scientists have helped three amputees merge with their bionic prosthetic legs as they climb over various obstacles without having to look. The amputees report using and feeling their bionic leg as part of their own body, thanks to sensory feedback from the prosthetic leg that is delivered to nerves in the leg's stump.

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Chronic insomnia can be cured in cancer survivors with a basic sleep education class

Investigators report that a single-session sleep education program for survivors can cure insomnia in many participants, and that those who don't benefit from this approach are often helped by a more extensive, but still modest, three-session program.

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