Human Brain Still Awake, Even During Deep Sleep:
Sleep in humans is divided in two main phases: non-REM sleep, which occupies most of our early sleep night, and REM sleep, during which our dreams prevail. Non-REM sleep is usually considered as a compensatory 'resting' state for the brain, following the intense waking brain activity. Indeed, previous brain imaging studies showed that the brain was less active during periods of non-REM sleep as compared to periods of wakefulness. Although not rejecting this concept, researchers from the Cyclotron Research Centre of the University of Liège in Belgium and from the Department of Neurology of Liege University Hospital demonstrate that, even during its deepest stages (also called 'slow-wave-sleep'), non-REM sleep should not be viewed as a stage of constant and continuous brain activity decrease, but is also characterized by transient and recurrent activity increases in specific brain areas.
Medical Textbooks Use White, Heterosexual Men As A 'Universal Model':
Images of white men predominate in western anatomy textbooks, which present them as a "universal model" of the human being. This is the main conclusion of a study that has analysed 16,329 images from 12 manuals currently recommended by 20 of the most prestigious universities in Europe, the United States and Canada.
Never Fear: It May Be OK To Let Your Kids Gorge On Candy This Halloween:
Halloween can present a very scary time of year for any parent concerned about their child's oral health. Adam Wohlman says that when his daughters go trick or treating, they come back with a pretty big haul - but he lets them enjoy as much as they want.
Study Looks At The Lives Of Boys Who Commit Dating Violence:
A new study sheds light on the lives of teenage boys who abuse their girlfriends. In their own words, the young men often describe facing challenges such as growing up with troubled family lives, having little or no support when they began to fail at school, and witnessing violence in their own homes and communities.
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