Department of Neurology, Section Neuropsychology, University Hospital, RWTH Aachen University, Aachen, Germany.
Behav Brain Funct. 2011 May 16;7:15. doi: 10.1186/1744-9081-7-15.
To date, the neural correlates of phonological word stress processing are largely unknown.
In the present study, we investigated the processing of word stress and vowel quality using an identity matching task with pseudowords.
In line with previous studies, a bilateral fronto-temporal network comprising the superior temporal gyri extending into the sulci as well as the inferior frontal gyri was observed for word stress processing. Moreover, we found differences in the superior temporal gyrus and the superior temporal sulcus, bilaterally, for the processing of different stress patterns. For vowel quality processing, our data reveal a substantial contribution of the left intraparietal cortex. All activations were modulated by task demands, yielding different patterns for same and different pairs of stimuli.
Our results suggest that the left superior temporal gyrus represents a basic system underlying stress processing to which additional structures including the homologous cortex site are recruited with increasing difficulty.
迄今为止，语音词重音处理的神经关联在很大程度上仍是未知的。
在本研究中，我们使用假词的身份匹配任务来研究词重音和元音质量的处理。
与先前的研究一致，观察到一个包含延伸到脑回的颞上回以及额下回的双侧额颞网络，用于词重音处理。此外，我们发现双侧颞上回和颞上沟在处理不同的重音模式时存在差异。对于元音质量处理，我们的数据显示左顶内皮层有很大的贡献。所有激活都受到任务需求的调节，对于相同和不同的刺激对产生不同的模式。
我们的结果表明，左颞上回代表了一个基本的压力处理系统，随着难度的增加，包括同源皮质部位在内的额外结构被招募进来。
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