Archive for August, 2006
Efficiency of visual information processing in children at-risk for dyslexia: habituation of single-trial erps.
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Efficiency of visual information processing in children at-risk for dyslexia: habituation of single-trial ERPs.
Brain Lang. 2006 Sep;98(3):319-31
Authors: Regtvoort AG, van Leeuwen TH, Stoel RD, van der Leij A
To investigate underlying learning mechanisms in relation to the development of dyslexia, event-related potentials to visual standards were recorded in five-year-old pre-reading children at-risk for familial dyslexia (n=24) and their controls (n=14). At the end of second grade the children aged 8 years were regrouped into three groups according to literacy level and risk factor. Single-trial analyses revealed N1 habituation in the normal-reading controls, but not in the normal-reading…
Brain-behavior relations in reading and dyslexia: implications of chinese results.
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Brain-behavior relations in reading and dyslexia: implications of Chinese results.
Brain Lang. 2006 Sep;98(3):344-6
Authors: Perfetti CA, Tan LH, Siok WT
PMID: 16824590 [PubMed - indexed for MEDLINE] (Source: Brain and Language)Original post by Brain and Language
No commentsItalian developmental dyslexic and proficient readers: where are the differences?
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Italian developmental dyslexic and proficient readers: where are the differences?
Brain Lang. 2006 Sep;98(3):347-51
Authors: Barca L, Burani C, Di Filippo G, Zoccolotti P
Italian dyslexic children are characterized by a pervasive reading speed deficit, with relatively preserved accuracy. This pattern has been associated with predominant use of the nonlexical reading procedure. However, there is no evidence of a deficit in the lexical route of Italian dyslexics. We investigated both lexical and nonlexical reading procedures in dyslexic children through two marker effects, namely, the word frequency effect and the effect of contextual grapheme-to-phoneme conversion rules. Although dyslexics w…
An attempt to simulate letter-by-letter dyslexia in normal readers.
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An attempt to simulate letter-by-letter dyslexia in normal readers.
Brain Lang. 2006 Sep;98(3):251-63
Authors: Fiset S, Arguin M, Fiset D
We attempted to simulate the main features of letter-by-letter (LBL) dyslexia in normal readers through stimulus degradation (i.e. contrast reduction and removal of high spatial frequencies). The results showed the word length and the letter confusability effects characteristic of LBL dyslexia. However, the interaction of letter confusability and N size (i.e. a facilitatory effect only for low confusability targets) previously observed in LBL dyslexics [Arguin, M., Fiset, S., & Bub, D. (2002). Sequential and parallel letter processing in letter-by-letter …
Concerns over fetal ultrasound
Recent research published in the Proceedings of the National Academy of Sciences suggests that ultrasound could be damaging to developing brain of a fetus. Before we eschew ultrasound altogether, we should recognize that the study found that rat fetuses under repeated ultrasound had neurons that failed to connect properly to the cerebral cortex. That’s all. Don’t take our word for it, as Dr Pasko Rakic… “Our study in mice does not mean use of ultrasound on human fetuses for appropriate diagnostic and medical purposes should be abandoned,” said Dr. Pasko Rakic, lead researcher and chairman of the neurobiology department at Yale University School of Medicine. However, he said women should avoid unnecessary ultrasound scans until more resear…
No commentsInvestigational Drug Targeting Inflammatory Bowel Disease Enters Second Human Clinical Trial
NovogenLimited’s investigational anti-inflammatory compound NV-52, is entering itssecond human clinical study following the successful completion oftoxicology testing. NV-52 is a novel compound developed by Novogen to target inflammatorybowel disease. This study was cleared to begin following the successful completion ofa Phase Ia study that confirmed the bio-availability of the drug in oralform, and its safety when administered at an acute dose. [click link for full article]Original post by It’s My Life, People
No commentsA neurocognitive overview of reading acquisition and dyslexia across languages
Developmental Science Volume 9, Issue 5, Page 448-450, Sep 2006. (Source: Developmental Science)Original post by Developmental Science
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