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首页> 外文期刊>Intelligence: A Multidisciplinary Journal >A smarter brain is associated with stronger neural interaction in healthy young females: A resting EEG coherence study
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A smarter brain is associated with stronger neural interaction in healthy young females: A resting EEG coherence study

机译：在健康的年轻女性中，更聪明的大脑与更强的神经相互作用相关：一项静息的脑电图相关性研究

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General intelligence, the g factor, is a major issue in psychology and neuroscience. However, the neural mechanism of the g factor is still not clear. It is suggested that the g factor should be non-modular (a property across the brain) and show good colinearity with various cognitive tests. This study examines the hypothesis that functional connectivity may be a good candidate for the g factor. We recorded resting state eyes-closed EEG signals in 184 healthy young females. Coherence values of 38 selected channel pairs across delta, theta, alpha, beta and gamma frequencies were correlated with six intelligence quotient (IQ) subtests, including symbol search, block design, object assembly, digit span, similarity and arithmetic. A three-stage analytic flow was constructed to delineate common (g factor) and unique neural components of intelligence. It is noticed that the coherence pattern demonstrates good correlation with five of the IQ subtests (except symbol search) and non-modularity in the brain. Our commonality analyses support connectivity strength in the brain as a good indicator of the g factor. For the digit span and arithmetic tests, the uniqueness analyses provide left-lateralized topography relevant to the operation of working memory. Performance on the arithmetic test is further correlated with strengths at left temporo-parietal and bilateral temporal connections. All the significant correlations are positive, indicating that the stronger the connectivity strengths, the higher the intelligence. Our analyses conclude that a smarter brain is associated with stronger interaction in the central nervous system. The implication and why the symbol search does not show parallel results are discussed.
机译：通用智力（g因子）是心理学和神经科学领域的主要问题。然而，g因子的神经机制仍不清楚。建议g因子应该是非模块化的（整个大脑的特性），并在各种认知测试中表现出良好的共线性。这项研究检验了以下假设：功能连接性可能是g因子的良好候选者。我们记录了184名健康年轻女性的静息状态闭眼式EEG信号。 38个选定通道对在Delta，θ，α，β和gamma频率上的相干值与六个智商（IQ）子测试相关，包括符号搜索，块设计，对象组合，数字跨度，相似度和算术。构建了一个三阶段的分析流程来描述智能的常见（g因子）和独特的神经成分。值得注意的是，相干模式显示与五个智商子测验（符号搜索除外）和大脑中的非模态性具有良好的相关性。我们的共性分析支持大脑中的连通性强度，是g因子的良好指标。对于数字跨度和算术测试，唯一性分析提供了与工作内存操作相关的左侧拓扑。算术测试的表现还与左侧颞顶和双侧颞叶连接处的强度相关。所有显着的相关性都是正的，表明连接强度越强，智能越高。我们的分析得出结论，更聪明的大脑与中枢神经系统更强的相互作用有关。讨论了含义以及为什么符号搜索未显示并行结果。

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