Links for Keyword: Dyslexia

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Smoking pure cannabis is more harmful to lungs than tobacco, a health charity is warning. A study by the British Lung Foundation found that just three cannabis joints a day cause the same damage as 20 cigarettes. And when cannabis and tobacco are smoked together, the effects are dramatically worse. Evidence shows that tar from cannabis cigarettes contains 50% more cancer causing carcinogens than tobacco. Dr Mark Britton, chairman of the British Lung Foundation, said: "These statistics will come as a surprise to many people, especially those who choose to smoke cannabis rather than tobacco in the belief it is safer for them. "It is vital that people are fully aware of the dangers so they can make an educated decision and know the damage they may be causing." (C)BBC

Related chapters from BN: Chapter 4: The Chemistry of Behavior: Neurotransmitters and Neuropharmacology
Related chapters from MM:Chapter 3: The Chemistry of Behavior: Neurotransmitters and Neuropharmacology
Link ID: 2981 - Posted: 11.11.2002

The scientists say dyslexic children struggle with rhythm A poor sense of rhythm could be to blame for dyslexia, scientists believe. Researchers from University College London (UCL) found dyslexic children were less able to detect beats in sounds with a strong rhythm. But children who read exceptionally well for their age were found to much better than most at spotting rhythms. The researchers conclude that an awareness of beats can influence the way young children assimilate speech patterns, which may in turn affect their reading and writing abilities. Up to 100 children, 24 of whom were certified dyslexic, were tested as part of the UCL study published in the journal Proceedings of the National Academy of Sciences. (C) BBC

Related chapters from BN: Chapter 19: Language and Lateralization
Related chapters from MM:Chapter 15: Language and Lateralization
Link ID: 2364 - Posted: 07.24.2002

Dyslexia could be linked to low blood pressure Many dyslexic children come from families with a history of lower blood pressure - adding weight to theories of a common cause of the disorder. The origins of the learning disability - which causes children to have poor reading skills - are a mystery to doctors. It has been suggested that as many as 10% of UK children may suffer from dyslexia in some form. And many doctors believe that its cause is at least partly due to physical differences in the brain. (C) BBC

Related chapters from BN: Chapter 19: Language and Lateralization
Related chapters from MM:Chapter 15: Language and Lateralization
Link ID: 1272 - Posted: 01.07.2002

Poor reading skills have both physical, environmental causes
Reading problems in young children may be influenced by a combination of both neurological and environmental factors, according to a new study. "Children may fail to develop adequate reading skills because of their environment, abnormal brain structure, or both," says lead study author Mark A. Eckert, Ph.D., of the McKnight Brain Institute of the University of Florida. The researchers found that reading skill and verbal ability were predicted by asymmetry of the temporal plane, a brain area that processes auditory information. Poorly performing children had more symmetrical temporal planes, compared with a left-weighted asymmetry which is more commonly seen.

Related chapters from BN: Chapter 7: Life-Span Development of the Brain and Behavior; Chapter 19: Language and Lateralization
Related chapters from MM:Chapter 4: Development of the Brain; Chapter 15: Language and Lateralization
Link ID: 377 - Posted: 10.20.2001

Dyslexia and Language Brain Areas
The learning disability dyslexia, which centers on difficulties in reading, once stumped scientists. Since dyslexics often have good intelligence and even may be gifted in some areas, it was thought that a little motivation could get them on the right track. Now researchers not only know that dyslexia is born of biology, but they also are getting closer to confirming the key brain areas that are affected. New insights will help pinpoint therapies and improve treatment.

Related chapters from BN: Chapter 19: Language and Lateralization
Related chapters from MM:Chapter 15: Language and Lateralization
Link ID: 365 - Posted: 10.20.2001

Dyslexia Harder on English Speakers, Researchers Find Jamie Talan, Newsday Friday, March 16, 2001 Studying diverse groups from three countries, researchers have discovered that dyslexic people, regardless of their native languages, have the same brain abnormality, even though some countries have much lower rates of dyslexia than English-speaking countries. According to the study, appearing today in the journal Science, there are twice as many identified dyslexics in English-speaking cultures as in countries with less complex languages. Languages with more complex writing and reading systems, such as English and French, are more difficult for people with or without dyslexia. ©2001 San Francisco Chronicle Page D - 3

Related chapters from BN: Chapter 19: Language and Lateralization
Related chapters from MM:Chapter 15: Language and Lateralization
Link ID: 226 - Posted: 10.20.2001

Immune proteins play role in brain development and remodeling Discovery suggests new theory for dyslexia, Parkinson's disease and multiple sclerosis Boston, MA-December 15, 2000-Two immune proteins found in the brains of mice help the brain develop and may play key roles in triggering developmental disorders like dyslexia and neurodegenerative disorders like Parkinson's Disease, according to a Harvard Medical School study reported in today's issue of Science. Although neuroscientists have recently found evidence that the brain is subject to immune surveillance, the Harvard researchers were surprised to discover the mouse brain also produces its own immune molecules, the proteins Class I MHC and CD3-zeta. In the immune system, the two proteins act as part of a lock and key system to recognize and rid the body of foreign invaders. In the brain, they may be part of a signaling system that recognizes and eliminates inappropriate neural connections.

Related chapters from BN: Chapter 15: Emotions, Aggression, and Stress
Related chapters from MM:Chapter 11: Emotions, Aggression, and Stress
Link ID: 124 - Posted: 10.20.2001