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首页> 外文期刊>Cerebral cortex >Common and dissociable activation patterns associated with controlled semantic and phonological processing: evidence from FMRI adaptation.
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Common and dissociable activation patterns associated with controlled semantic and phonological processing: evidence from FMRI adaptation.

机译：与受控语义和语音处理相关的常见和可分离的激活模式：来自FMRI适应的证据。

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摘要

Recent evidence suggests specialization of anterior left inferior prefrontal cortex (aLIPC; approximately BA 45/47) for controlled semantics and of posterior LIPC (pLIPC; approximately BA 44/6) for controlled phonology. However, the more automated phonological tasks commonly used raise the possibility that some of the typically extensive aLIPC activation during semantic tasks may relate to controlled language processing beyond the semantic domain. In the present study, an event-related fMRI adaptation paradigm was employed that used a standard controlled semantic task and a phonological task that also emphasized controlled processing. When compared with letter (baseline) processing, significant fMRI task and adaptation effects in the aLIPC and pLIPC regions ( approximately BA 45/47, approximately BA 44) were observed during both semantic and phonological processing, with aLIPC showing the strongest effects during semantic processing. A left frontal region ( approximately BA 6) showed task and relative adaptation effects preferential for phonological processing, and a left temporal region ( approximately BA 21) showed task and relative adaptation effects preferential for semantic processing. Our results demonstrate that aLIPC and pLIPC regions are involved in controlled processing across multiple language domains, arguing against a domain-specific LIPC model and for domain-preferentiality in left posterior frontal and temporal regions.
机译：最近的证据表明，用于控制语义的左前下额叶前额叶皮层（aLIPC;大约BA 45/47）和用于控制音韵学的后LIPC（pLIPC;大约BA 44/6）专门化。但是，通常使用的自动化程度更高的语音任务增加了以下可能性：语义任务期间某些通常广泛的aLIPC激活可能与超出语义域的受控语言处理有关。在本研究中，采用了与事件相关的功能磁共振成像适应范例，该范例使用标准的受控语义任务和语音任务，后者也强调受控处理。与字母（基线）处理相比，在语义和语音处理过程中，在aLIPC和pLIPC区域（大约BA 45/47，大约BA 44）中观察到了明显的fMRI任务和适应效果，aLIPC在语义处理期间显示出最强的作用。左额叶区域（约BA 6）显示出优先考虑语音处理的任务和相对适应效果，左颞叶区域（约BA 21）显示出优先处理语义处理的任务和相对适应效果。我们的结果表明，aLIPC和pLIPC区域涉及跨多个语言域的受控处理，这与域特定的LIPC模型以及左后额叶和颞叶区域的域优先权有关。

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