Department of Neuropsychology, Children's Healthcare of Atlanta, Atlanta, GA 30322, USA.
Neuropsychologia. 2013 Aug;51(9):1684-92. doi: 10.1016/j.neuropsychologia.2013.05.012. Epub 2013 May 22.
The planum temporale is a highly lateralized cortical region, located within Wernicke's area, which is thought to be involved in auditory processing, phonological processing, and language. Research has linked abnormal morphology of the planum temporale to developmental dyslexia, although results have varied in large part due to methodological inconsistencies in the literature. This study examined the asymmetry of the planum temporale in 29 children who met criteria for dyslexia and 26 children whose reading was unimpaired. Leftward asymmetry of the planum temporale was found in the total sample and this leftward asymmetry was significantly reduced in children with dyslexia. This reduced leftward asymmetry in children with dyslexia was due to a planum temporale that is larger in the right hemisphere. This study lends support to the idea that planum temporale asymmetry is altered in children with developmental dyslexia.
颞平面是一个高度侧化的皮质区域,位于韦尼克区内部,被认为与听觉处理、语音处理和语言有关。研究表明,颞平面的形态异常与发展性阅读障碍有关,尽管由于文献中的方法不一致,结果存在很大差异。本研究检查了 29 名符合阅读障碍标准的儿童和 26 名阅读未受影响的儿童的颞平面的不对称性。在总样本中发现了颞平面的左侧不对称性,而阅读障碍儿童的这种左侧不对称性显著降低。阅读障碍儿童的这种左侧不对称性减少是由于右半球的颞平面更大。本研究支持这样一种观点,即发展性阅读障碍儿童的颞平面不对称性发生改变。