Broman M, Rudel R G, Helfgott E, Krieger J
Cortex. 1986 Sep;22(3):447-59. doi: 10.1016/s0010-9452(86)80007-7.
Manual reaction-times and errors to single letter stimuli presented ipsilaterally (intrahemispherically) or contralaterally (interhemispherically) to the responding hand were compared for dyslexic children and normal readers aged 8 to 13 years. Dyslexic children were significantly slower than normal readers across four field-hand conditions, but for the dyslexic group, reaction times were not discrepantly longer nor were errors more frequent in the contralateral condition, contrary to the hypothesis of impaired interhemispheric processing in that group. Unlike normals, dyslexic children made more errors in the right visual field-right hand condition. These results suggest that cortical and/or subcortical information processing is slower in dyslexics, but that neither the rate nor the accuracy of information transfer between the hemispheres is specifically abnormal. In addition, some defect within the left hemisphere of dyslexics for processing linguistic stimuli is indicated.
研究比较了8至13岁的诵读困难儿童和正常阅读者对呈现于与反应手同侧（半球内）或对侧（半球间）的单个字母刺激的手动反应时间和错误情况。在四种视野-手的条件下，诵读困难儿童的反应明显比正常阅读者慢，但对于诵读困难组而言，与该组半球间加工受损的假设相反，对侧条件下的反应时间并没有显著延长，错误也没有更频繁。与正常人不同，诵读困难儿童在右视野-右手条件下出现的错误更多。这些结果表明，诵读困难者的皮层和/或皮层下信息处理较慢，但半球间信息传递的速度和准确性均无特异性异常。此外，这表明诵读困难者左半球在处理语言刺激方面存在一些缺陷。
