Perceptual and lexical factors in a case of letter-by-letter reading
Perceptual and lexical factors in a case of letter-by-letter reading
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DOI：
10.1080/026432998381258
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发表时间：
1998-02-01
影响因子：
3.4
通讯作者：
Caramazza, A
中科院分区：
文献类型：
--
作者：
Chialant, D;Caramazza, A
我们报告了一个逐个字母阅读器(MJ)的案例，他显示了对单个字母的正常处理，并且当提供字母名称用于听觉识别时，或者当被允许有足够的时间来处理视觉呈现的字母串时，他可以正常地访问拼写输入词典。然而，MJ在同时处理多个字母和其他简单视觉刺激方面表现出严重的困难。此外，当刺激呈现的时间太短而不允许对字母串进行连续处理时，她无法正常获得词汇正字法表征及其含义。我们发现，在没有对单词中字母进行相应识别的情况下，没有证据表明(部分)词汇或语义通达：当控制相关视觉特征的输入刺激时，没有观察到内隐阅读的迹象；只有在允许复杂猜测的条件下，才能获得内隐阅读。这一结果模式被解释为表明LBL阅读(至少在MJ中)是词汇前加工机制受损的结果。在MJ的案例中，这一缺陷反映了信息从右脑正常的视觉处理系统向左脑的正常语言处理系统传输的降级。
We report the case of a letter-by-letter reader (MJ) who showed normal processing of single letters and who could normally access the orthographic input lexicon when presented with letter names for aural recognition, or when allowed enough time to process a visually presented letter string. However, MJ showed severe difficulties in simultaneously processing multiple letters and other simple visual stimuli. Furthermore, she does not have normal access to lexical orthographic representations and their meanings when stimuli are presented for too brief a time to allow for serial processing of the letter string. We found no evidence of (partial) lexical or semantic access without corresponding recognition of the letters in a word: No signs of implicit reading were observed when the input stimuli were controlled for the relevant visual features; "implicit reading" was only obtained under conditions that allowed sophisticated guessing. This pattern of results is interpreted as indicating that LBL reading (at least in MJ) results from damage to prelexical processing mechanisms. In MJ's case, the deficit reflects the degraded transfer of information from a normal visual processing system in the right hemisphere to a normal language processing system in the left hemisphere.