Baart Martijn, de Boer-Schellekens Liselotte, Vroomen Jean
Tilburg University, Dept of Medical Psychology and Neuropsychology, P.O. Box 90153, Warandelaan 2, 5000 LE Tilburg, The Netherlands.
Acta Psychol (Amst). 2012 May;140(1):91-5. doi: 10.1016/j.actpsy.2012.03.003. Epub 2012 Apr 6.
Auditory phoneme categories are less well-defined in developmental dyslexic readers than in fluent readers. Here, we examined whether poor recalibration of phonetic boundaries might be associated with this deficit. 22 adult dyslexic readers were compared with 22 fluent readers on a phoneme identification task and a task that measured phonetic recalibration by lipread speech (Bertelson, Vroomen, & De Gelder, 2003). In line with previous reports, we found that dyslexics were less categorical in the labeling of the speech sounds. The size of their phonetic recalibration effect, though, was comparable to that of normal readers. This result indicates that phonetic recalibration is unaffected in dyslexic readers, and that it is unlikely to lie at the foundation of their auditory phoneme categorization impairments. For normal readers however, it appeared that a well-calibrated system is related to auditory precision as the steepness of the auditory identification curve positively correlated with recalibration.
与阅读流畅的读者相比，发育性阅读障碍读者的听觉音素类别定义不够清晰。在此，我们研究了语音边界的重新校准不佳是否可能与这种缺陷有关。在一项音素识别任务和一项通过唇读语音测量语音重新校准的任务中（Bertelson、Vroomen和De Gelder，2003年），对22名成年阅读障碍读者和22名阅读流畅的读者进行了比较。与之前的报告一致，我们发现阅读障碍者在语音标记上的分类性较差。不过，他们语音重新校准效应的大小与正常读者相当。这一结果表明，阅读障碍读者的语音重新校准未受影响，而且其不太可能是他们听觉音素分类障碍的基础。然而，对于正常读者而言，似乎一个校准良好的系统与听觉精度有关，因为听觉识别曲线的斜率与重新校准呈正相关。
