Phonological awareness predicts activation patterns for print and speech.
Phonological awareness predicts activation patterns for print and speech.
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DOI：
10.1007/s11881-009-0024-y
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发表时间：
2009-06
影响因子：
2.3
通讯作者：
Pugh, Kenneth R.
中科院分区：
文献类型：
--
作者：
Frost, Stephen J.;Landi, Nicole;Mencl, W. Einar;Sandak, Rebecca;Fulbright, Robert K.;Tejada, Eleanor T.;Jacobsen, Leslie;Grigorenko, Elena L.;Constable, R. Todd;Pugh, Kenneth R.
利用功能磁共振成像（fMRI），我们探索了语音意识（语音意识是语音片段结构的一种隐喻知识的测量方法）与6 - 10岁年轻读者在印刷和语音处理过程中的大脑激活模式之间的关系。PA的行为测量与颞上区和枕颞区印刷品相对于言语标记的激活水平呈正相关。打印诱发的颞上额叶和额下额叶激活水平的差异也与PA测量相关，且相关方向随刺激类型的不同而不同：可发音的假词激活水平为正，辅音串激活水平为负。这些结果支持并扩展了行为和神经认知文献中的许多迹象，即PA是初级读者技能的主要组成部分，并指出了一条发展轨迹，即书面语言参与学习者在通往成功读写的道路上最初由言语塑造的区域。
Using fMRI, we explored the relationship between phonological awareness (PA), a measure of metaphonological knowledge of the segmental structure of speech, and brain activation patterns during processing of print and speech in young readers from six to ten years of age. Behavioral measures of PA were positively correlated with activation levels for print relative to speech tokens in superior temporal and occipito-temporal regions. Differences between print-elicited activation levels in superior temporal and inferior frontal sites were also correlated with PA measures with the direction of the correlation depending on stimulus type: positive for pronounceable pseudowords and negative for consonant strings. These results support and extend the many indications in the behavioral and neurocognitive literature that PA is a major component of skill in beginning readers and point to a developmental trajectory by which written language engages areas originally shaped by speech for learners on the path toward successful literacy acquisition.
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