目的 研究单侧空间忽视患者阅读汉字是否存在忽视性阅读障碍及忽视性阅读障碍类型,是否存在词长效应及语义效应.方法 采用汉字阅读材料对10例左侧空间忽视患者进行阅读能力检测.结果 单侧空间忽视患者在阅读汉字材料时出现阅读障碍,多为忽视性阅读障碍(202/215,94.0%).忽视性阅读障碍中最常见的类型是遗漏错误(148/202,73.3%),其次是替换错误,其余为添加错误.双字词的错误率为9.9%±8.4%,三字词的错误率为18.8%±16.2%,随着字数的增加,阅读错误率明显增加(T=-55,P<0.05);真词错误率为8.3%±7.5%,假词错误率为18.9%±16.6%,假词错误率明显高于真词(T=-55,P<0.05).结论 汉字忽视性阅读障碍最常见的类型是遗漏错误,阅读障碍表现出词长效应,单侧空间忽视患者对忽视侧的汉字存在语义加工.
Objective To explore neglect dyslexia in unilateral spatial neglect patients, the error type and whether there exists word length and semantic effect. Methods Ten left spatial neglect patients were investigated by Chinese characters reading material. Results Unilateral spatial patients showed neglect dyslexia (202 neglect errors, 94. 0% of the total 215 errors) when reading. The most eommon errors were omissions ( 148 errors, 73.3% of the total 202 neglect errors) , followed by substitutions and additions. The error rate of two words was 9.9% + 8.4% , while the rate of three words was 18.8% -+ 16. 2%. Performance was worse with the increase of word length ( T = - 55, P 〈 O. 05 ). The error rate of words was 8.3% -+ 7.5% , while the rate of non-words was 18. 9% + 16. 6% , and the rate of non-words was worse than that of words ( T = - 55, P 〈 0.05 ). Conclusions Our study has shown that omissions are the most common error type of neglect dyslexia in Chinese unilateral spatial neglect patients, and the impairment include word length effect. The patients with unilateral spatial neglect show preserved semantic processing in the neglect side.