Kim H, Levine S C
Department of Psychology, University of Chicago, IL 60637.
Neuropsychologia. 1991;29(1):93-105. doi: 10.1016/0028-3932(91)90095-p.
Sixty-three subjects (31 dextrals and 32 sinistrals) were given two visual half-field laterality tasks (recognition of words and faces). Subjects were classified as having typical or atypical hemispheric specialization on the basis of the relative magnitude of their asymmetry scores on the two laterality tasks. Those subjects whose word asymmetry scores were larger than their face asymmetry scores (asymmetry scores computed as RVF-LVF for both tasks) were classified into Group Typical and those subjects whose word asymmetry scores were smaller than their face asymmetry scores were classified into Group Atypical. For both dextrals and sinistrals, the proportion of subjects classified into Groups Typical and Atypical was consistent with estimates of the incidence of typical and atypical hemispheric asymmetry patterns based on sodium amytal testing. These results support the hypothesis that the relative magnitude of asymmetry scores on left and right hemisphere specialized tasks index individual differences in patterns of hemispheric specialization.
63名受试者（31名右利手和32名左利手）接受了两项视觉半视野偏侧性任务（单词和面孔识别）。根据受试者在两项偏侧性任务中不对称分数的相对大小，将其分类为具有典型或非典型半球特化。那些单词不对称分数大于面孔不对称分数的受试者（两项任务的不对称分数均计算为右视野-左视野）被分类为典型组，而那些单词不对称分数小于面孔不对称分数的受试者被分类为非典型组。对于右利手和左利手受试者，分类为典型组和非典型组的受试者比例与基于戊巴比妥钠测试的典型和非典型半球不对称模式发生率估计一致。这些结果支持了这样一种假设，即左右半球特化任务中不对称分数的相对大小反映了半球特化模式的个体差异。
