READING IN PURE ALEXIA - THE EFFECT OF STRATEGY
READING IN PURE ALEXIA - THE EFFECT OF STRATEGY
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DOI：
10.1093/brain/116.1.21
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发表时间：
1993-02-01
期刊：
影响因子：
14.5
通讯作者：
SCHWARTZ, H
中科院分区：
文献类型：
--
作者：
COSLETT, HB;SAFFRAN, EM;SCHWARTZ, H
许多研究人员已经证明，患有纯失读症的患者能够简单地理解他们无法明确识别的单词。我们之前建议这些患者可以通过两种不同的程序来阅读：一种费力的逐字母方法和“整个单词”程序，后者至少在最初不支持明确的单词识别。我们报告了在一名患有纯失读症的患者中对该建议进行的测试。我们推断，如果患者可以使用两种截然不同且不兼容的程序，他可能会通过改变任务要求而从一种程序切换到另一种程序。我们发现，当被要求命名单词时，患者采用了逐字母命名的策略；相比之下，当他被指示对快速出现的单词做出词汇决策或语义判断时，他似乎使用了“整个单词”策略。这些数据支持以下假设：该患者可以使用两种不同的手术。我们进一步认为，有必要禁止使用逐字母策略来证明纯粹的诵读能力，并且如果不这样做可能会导致文献中报道的其他案例中出现负面结果。
A number of investigators have demonstrated that patients with pure alexia comprehend briefly presented words which they are unable to explicitly identify. We suggested previously that these patients may read by means of two distinct procedures: a laborious letter-by-letter method and a 'whole-word' procedure which, at least initially, does not support explicit word identification. We report a test of this proposal in a patient with pure alexia. We reasoned that if the patient had access to two distinct and incompatible procedures, he might be induced to switch from one to the other by changing task demands. We found that when instructed to name words, the patient employed a letter-by-letter strategy; in contrast, when instructed to make lexical decision or semantic judgements about rapidly presented words, he appeared to use a 'whole-word' strategy. These data support the hypothesis that two distinct procedures are available to this patient. We argue, further, that it is necessary to suppress use of the letter-by-letter strategy to demonstrate whole word reading capability in pure alexics, and that failure to do so may account for negative findings in other cases reported in the literature.