Istituto Scientifico "E. Medea" di Bosisio P, Lecco, Italy.
Cogn Neuropsychol. 2006 Sep;23(6):841-55. doi: 10.1080/02643290500483090.
Focused visuo-spatial attention was studied in 10 developmental dyslexic children with impaired nonword reading, 10 dyslexic children with intact nonword reading, and 12 normally reading children. Reaction times to lateralized visual stimuli in a cued detection task showed that attentional facilitation of the target at the cued location was symmetrical in the three groups. However, dyslexics with impaired nonword reading selectively showed a lack of attentional inhibition for targets at the uncued location in the right visual field. This result was replicated in a second group of 13 dyslexics with impaired nonword reading. Individual differences in the ability of right attentional inhibition across the entire sample of dyslexics accounted for 17% of unique variance in nonword reading accuracy after controlling for individual differences in age, IQ, and phonological skills. A possible explanation based on the role of spatial attention mechanisms in the graphemic parsing process is discussed. Our results suggest that focused visuo-spatial attention may be crucial for nonword decoding.
研究了 10 名阅读障碍儿童（非词阅读受损）、10 名阅读障碍儿童（非词阅读未受损）和 12 名正常阅读儿童的集中视空间注意。在提示检测任务中，对侧视觉刺激的反应时间表明，三组的目标在提示位置的注意力促进是对称的。然而，非词阅读受损的阅读障碍者在右视野中未提示位置的目标上选择性地表现出注意力抑制不足。在第二组 13 名非词阅读受损的阅读障碍者中也得到了复制。在整个阅读障碍者样本中，右注意力抑制能力的个体差异在控制年龄、智商和语音技能的个体差异后，对非词阅读准确性的独特方差解释了 17%。根据空间注意机制在拼写法解析过程中的作用，讨论了一种可能的解释。我们的结果表明，集中的视空间注意力可能对非词解码至关重要。
