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- 2017
自信的静息态功能磁共振成像低频振幅研究
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Abstract:
自信是现代人优秀的个性品质，也是自信进取性的重要构成要素.为研究自信的神经起源，采用静息态功能磁共振成像技术，以大脑自发神经活动的低频振幅、功能连接分析来探究与自信相关的脑区及脑网络.结果发现：左侧颞中回、右侧颞下回和中央后回的低频振幅值与自信有紧密关系；右侧颞下回与左侧中央前回和右侧中央后回之间的连接强度与自信正相关，该脑区与双侧额中回、右侧额上回、左侧顶上小叶和左侧扣带回之间的连接强度与自信负相关；右侧中央后回与双侧脑岛、右侧颞中回、左侧颞上回、左侧额上回的连接强度与自信正相关，与左侧楔前叶的连接强度和自信负相关.这些大脑区域连接与自信的关系表明自信品质具有广泛的脑功能网络基础，为自信及相关研究提供了新证据.
Self-confidence, an excellent personality, is an important component of self-confidence culture, but very little is known about its neural basis. A baseline or control state is fundamental to the understanding of most complex systems. In this study, we used the resting-state functional magnetic resonance imaging signal of the amplitude of low-frequency fluctuation (ALFF) and resting-state functional connectivity (RSFC) to explore self-confidence-related brain regions and networks. The results showed that the ALFFs in the left middle temporal gyrus, right inferior temporal gyrus and postcentral gyrus were closely related to self-confidence. RSFC analyses revealed that connection strengths between the right inferior temporal gyrus, left precentral gyrus, and right postcentral gyrus were positively correlated with self-confidence; the connection strengths between the right inferior temporal gyrus and bilateral middle frontal gyrus, right superior frontal gyrus, left superior parietal lobule and left cingulate gyrus were negatively correlated with self-confidence. Furthermore, the strengths of functional connectivity between the right postcentral gyrus and bilateral insula, right middle temporal gyrus, left superior temporal gyrus, left superior frontal gyrus were positively related to self-confidence; the strength of functional connectivity between the right postcentral gyrus and precuneus was negatively related to self-confidence. The relationships between these brain regions and self-confidence indicate that self-confidence has a broad basis of functional network, which provides new evidence for future study
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