This study used Near-Infrared
Spectroscopy (NIRS) imaging to measure the regional cerebral blood volume (BV) and the changes of cerebral activation in the
left prefrontal cortex of 12 Chinese dyslexic children and their 12 age-matched normal controls during the Paced Visual Serial
Addition Test (PVSAT). Results showed that the scores of PVSAT of dyslexic children were significantly lower than those of
the normal children (t=3.33, P<0.01). The activations of the left prefrontal cortex in the normal group were significantly greater than those of dyslexic
children (all P<0.01). Our results indicated that Chinese dyslexia had a general deficiency in working memory and this may be caused by the
abnormal metabolic activity of brain blood volume in the left prefrontal cortex and the d...

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