Larsen J P, Høien T, Lundberg I, Odegaard H
Department of Neurology, Central Hospital of Rogaland, Stavanger, Norway.
Brain Lang. 1990 Aug;39(2):289-301. doi: 10.1016/0093-934x(90)90015-9.
MRI technique was used to examine the size and symmetry of the plana temporale in 19 dyslexic students in grade 8 and in carefully matched control subjects. The results demonstrated a high frequency of planum symmetry among the dyslexics (70%) whereas symmetry was observed in only 30% of the control subjects. It was not possible to demonstrate any clear association between symmetry/asymmetry of planum temporale and handedness. Word-reading strategies among the dyslexics and control subjects were investigated with computerized tasks where accuracy and naming latency were recorded. All subjects with pure phonological deficits in reading had symmetrical plana temporale indicating a possible neuroanatomical basis for a characteristic symptom of linguistic processing deficiency in developmental dyslexia.
采用磁共振成像（MRI）技术检查了19名八年级诵读困难学生及精心匹配的对照对象的颞平面大小和对称性。结果显示，诵读困难者中颞平面对称性的发生率较高（70%），而对照对象中仅30%观察到对称性。无法证明颞平面的对称/不对称与用手习惯之间存在任何明确关联。通过计算机任务研究了诵读困难者和对照对象的单词阅读策略，并记录了准确性和命名潜伏期。所有阅读中存在单纯语音缺陷的受试者颞平面均对称，这表明发育性诵读困难中语言处理缺陷这一特征性症状可能存在神经解剖学基础。
