The Brain Mechanism of Developmental Dyslexia:Evidences From The Brain Image
10.3724/SP.J.1206.2009.00189
- VernacularTitle:发展性阅读障碍的脑机制——来自脑成像研究的证据
- Author:
Yang YANG
;
Hongyan BI
;
Jiuju WANG
- Publication Type:Journal Article
- Keywords:
developmental dyslexia;
brain structure;
brain function;
brain functional connection
- From:
Progress in Biochemistry and Biophysics
2009;36(11):1394-1401
- CountryChina
- Language:Chinese
-
Abstract:
Developmental dyslexia is a specific learning disability. The cerebral mechanism of development dyslexia is an important topic that has fascinated many researchers. With the introduction of brain imaging in studies of cerebral mechanism of development dyslexia, many achievements have been made. Studies of developmental dyslexia structure image found that development dyslexia showed brain structure abnormal in the parietotemporal region, occipitotemporal cortex, inferior frontal gyrus, and cerebellum et al, manifesting either in one specific area or by the asymmetry of one area; the functional image studies revealed that development dyslexia showed activity abnormal in most regions that proved to display structure abnormality; studies of brain functional connectivity demonstrates that the abnormality of development dyslexia happened not only in the connection between front-back part in one cerebral hemisphere, but also in the connection between the two hemispheres. In addition, some studies indicate Chinese development dyslexia has different brain mechanisms compared to that of alphabetic languages. These findings provide valuable insight for future developmental cerebral mechanisms research and for the expansion of Chinese development dyslexia research.
