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Social websites harm children's brains: Chilling warning to parents from top neuroscientist | Mail Online
Social networking websites are causing alarming changes in the brains of young users, an eminent scientist has warned.
Sites such as Facebook, Twitter and Bebo are said to shorten attention spans, encourage instant gratification and make young people more self-centred.
The claims from neuroscientist Susan Greenfield will make disturbing reading for the millions whose social lives depend on logging on to their favourite websites each day.
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Do 'Light' Cigarettes Deliver Less Nicotine To The Brain Than Regular Cigarettes?
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Reporting in the current online edition of the International Journal of Neuropsychopharmacology, UCLA psychiatry professor Dr. Arthur L. Brody and colleagues found that low-nicotine cigarettes act similarly to regular cigarettes, occupying a significant percentage of the brain's nicotine receptors.
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In the brain, nicotine binds to specific molecules on nerve cells called nicotinic acetylcholine receptors, or nAChRs. When nerve cells communicate, nerve impulses jump chemically across gaps between cells called synapses by means of neurotransmitters. The neurotransmitters then bind to the receptor sites on nerve cells — in the case acetylcholine resulting in the release of a pleasure-inducing chemical called dopamine. Nicotine mimics acetylcholine, but it lasts longer, releasing more dopamine.
"It can cause specific neurons to communicate and thus increases dopamine for an extended period of time," Brody said. "Most scientists believe that's one key reason why nicotine is so addictive."
From 12 years onward you learn differently
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Eight-year-old children have a radically different learning strategy from twelve-year-olds and adults. Eight-year-olds learn primarily from positive feedback ('Well done!'), whereas negative feedback ('Got it wrong this time') scarcely causes any alarm bells to ring. Twelve-year-olds are better able to process negative feedback, and use it to learn from their mistakes. Adults do the same, but more efficiently.
Farming at young age may lead to bone disease in adulthood
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Although farm chores are likely to keep young boys in shape and out of trouble, University of Cincinnati (UC) environmental health experts caution that it could be harmful to overall bone health if done too often at a young age.
A baby's smile is a natural high
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The baby's smile that gladdens a mother's heart also lights up the reward centers of her brain, said Baylor College of Medicine researchers in a report that appears in the journal Pediatrics today.
The Way Mothers Interact With Babies In First Year Predicts Child Behavior To Age 13
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The way mothers interact with their babies in the first year of life is strongly related to how children behave later on.
Confirmed - Genetic Material In Meteorites Is Extraterrestrial In Origin | Scientific Blogging
- I have always believed that extraterrestrial material had an important role in the evolution of life. - farrider on 2008-06-14
Study shows 3-month-olds are sensitive to emotional cues referring to objects in the world
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Scientists have discovered that three-month-old infants are sensitive to emotional signals that refer to objects in the world. It was once thought that young infants could only process social signals that were directed at them. However, in a new study published in PLoS ONE, researchers from Hunter College and the Max Planck Institute for Human Cognitive and Brain Scientists show that three-month-old infants go beyond face-to-face social interactions: they even use social cues to process objects in the world around them.
Study: Sad children out-perform happy children in attention-to-detail tasks
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Psychologists at the University of Virginia and the University of Plymouth (United Kingdom) have conducted experimental research that contrasts with the belief that happy children are the best learners. The findings, which currently appear online in the journal Developmental Science ( www.blackwell-synergy.com/doi/full/10.1111/j.1467-7687.2008.00709.x ), and will be printed in the June issue, show that where attention to detail is required, happy children may be at a disadvantage.
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