Left-dominance for resting-state temporal low-gamma power in children with impaired word-decoding and without comorbid ADHD.
Left-dominance for resting-state temporal low-gamma power in children with impaired word-decoding and without comorbid ADHD.
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静止状态的颞型低γ功率的左主导措施，单词解码受损且没有合并症的ADHD。
DOI：
10.1371/journal.pone.0292330
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发表时间：
2023
期刊：
影响因子：
3.7
通讯作者：
中科院分区：
文献类型：
--
作者：
阅读障碍的起源理论（即阅读障碍）是一种语言网络，无法有效地“夹杂”语音，对语音技能的发展产生了层叠的影响。活动，尤其是在左半球中，被认为是在语音中以语音速度跟踪的。疾病（RD）使用贝叶斯统计方法来分析脑电图的功率谱密度，我们检查了（1）静止状态的临时低γ功率在RD的左临时区域中功率与个人阅读性能协变； - HOC检验表明，RD组缺乏非典型性并不是由于包括注意力不足的人的含义，但是，事后测试也显示出仅在阅读缺陷的儿童中具有特定的左右效力。 ，当排除具有合并症的参与者时，我们还观察到对控件中的解码和左边的逆性关系，使得那些具有更好的解码技能的人会在上下文中讨论这些意外的发现。这些结果的先前理论框架可能反映出实时语言处理在儿童和青少年期间唤起语音范围内的γ节奏的重要性。
One theory of the origins of reading disorders (i.e., dyslexia) is a language network which cannot effectively ‘entrain’ to speech, with cascading effects on the development of phonological skills. Low-gamma (low-γ, 30–45 Hz) neural activity, particularly in the left hemisphere, is thought to correspond to tracking at phonemic rates in speech. The main goals of the current study were to investigate temporal low-γ band-power during rest in a sample of children and adolescents with and without reading disorder (RD). Using a Bayesian statistical approach to analyze the power spectral density of EEG data, we examined whether (1) resting-state temporal low-γ power was attenuated in the left temporal region in RD; (2) low-γ power covaried with individual reading performance; (3) low-γ temporal lateralization was atypical in RD. Contrary to our expectations, results did not support the hypothesized effects of RD status and poor decoding ability on left hemisphere low-γ power or lateralization: post-hoc tests revealed that the lack of atypicality in the RD group was not due to the inclusion of those with comorbid attentional deficits. However, post-hoc tests also revealed a specific left-dominance for low-γ rhythms in children with reading deficits only, when participants with comorbid attentional deficits were excluded. We also observed an inverse relationship between decoding and left-lateralization in the controls, such that those with better decoding skills were less likely to show left-lateralization. We discuss these unexpected findings in the context of prior theoretical frameworks on temporal sampling. These results may reflect the importance of real-time language processing to evoke gamma rhythms in the phonemic range during childhood and adolescence.
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