Fast dynamics of cortical functional and effective connectivity during word reading.
Fast dynamics of cortical functional and effective connectivity during word reading.
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DOI：
10.1371/journal.pone.0088940
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Ward LM
中科院分区：
文献类型：
--
作者：
Bedo N;Ribary U;Ward LM
我们描述的第一次快速动态的功能和有效的（因果）连接在字阅读。独立成分分析的高密度脑电图记录在一个字阅读任务恢复了多个来源的脑电活动，以前确定的功能磁共振成像和PET。结果证实腹侧枕颞皮层（vOT）作为一个中央枢纽的文字阅读，显示了一个进步的θ-波段（3-7 Hz）和γ-波段（30-50 Hz）相位同步和定向θ-波段和γ-波段信息流与早期视觉区和高级语言处理区。这些结果突出了在阅读过程的每个阶段所涉及的本地和远程神经动力学之间的相互作用。此外，这些功能和因果连接动态的测量可以用作与临床人群（例如，患有发育性阅读障碍的个体）进行比较的基准，使得连接动态的干扰可以提供关于语言处理的潜在神经问题及其潜在补救的见解。
We describe for the first time the fast dynamics of functional and effective (causal) connectivity during word reading. Independent component analysis of high-density EEG recorded during a word reading task recovered multiple sources of electrical brain activity previously identified by fMRI and PET. Results confirmed the ventral occipito-temporal cortex (vOT) as a central hub for word reading, showing a progression of theta-band (3–7 Hz) and gamma-band (30–50 Hz) phase synchronization and directed theta-band and gamma-band information flow with both early visual areas and high-level language-processing areas. These results highlight the interplay between local and long-distance neural dynamics involved at each stage of the reading process. Moreover, these measures of functional and causal connectivity dynamics may be used as a benchmark for comparison with clinical populations (e.g. individuals with developmental dyslexia), such that disturbances in connectivity dynamics may provide insight as to underlying neurological problems with language processing, and their potential remediation.
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影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
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