Neural Electrical Correlates of Subjective Happiness

IF 3.3 2区 医学 Q1 NEUROIMAGING
Wataru Sato, Takanori Kochiyama, Shota Uono
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Abstract

Happiness is a subjective experience that can serve as the ultimate goal for humans. A recent study that employed resting-state functional magnetic resonance imaging (fMRI) reported that spontaneous fluctuation (fractional amplitude of low-frequency fluctuation: fALFF) in the precuneus is negatively associated with subjective happiness. However, little is known about the neural electrical correlates of subjective happiness, which can provide direct evidence of neural activity and insights regarding the underlying psychological, cellular, and neurotransmitter mechanisms. Therefore, we measured 400-channel whole-head magnetoencephalography (MEG) during resting state in participants whose subjective happiness was evaluated using questionnaires. We conducted source reconstruction analysis utilizing bandpass-filtered MEG data and analyzed the fALFF of the band-limited power time series as an index of spontaneous neural fluctuation. Gamma-band fALFF values in the right precuneus were negatively associated with subjective happiness scores (partial correlation coefficient = −0.56). These findings indicate that subjective happiness has a neural electrical correlate of reduced spontaneous fluctuation of gamma-band neuronal oscillations in the right precuneus, and that it could be mediated by a reduction in wandering, clinging self-consciousness through heightened N-methyl-d-aspartate-dependent gamma-aminobutyric acid-ergic parvalbumin inhibitory interneuron activity.

Abstract Image

主观幸福感的神经电相关性
幸福是一种主观体验,可以作为人类的最终目标。最近一项使用静息状态功能磁共振成像(fMRI)的研究报道,楔前叶的自发波动(低频波动的分数振幅:fALFF)与主观幸福感呈负相关。然而,人们对主观快乐的神经电相关性知之甚少,这可以为神经活动提供直接证据,并为潜在的心理、细胞和神经递质机制提供见解。因此,我们测量了参与者在静息状态下的400通道全头脑磁图(MEG),他们的主观幸福感是通过问卷来评估的。我们利用带通滤波的MEG数据进行了源重构分析,并分析了带限功率时间序列的fALFF作为神经自发波动的指标。右侧楔前叶γ波段fALFF值与主观幸福感得分呈负相关(偏相关系数= - 0.56)。这些发现表明,主观幸福感与右侧楔前叶伽马带神经元振荡的自发波动减少有神经电相关性,并且可以通过增强n -甲基-d-天冬氨酸依赖的γ -氨基丁酸能小白蛋白抑制中间神经元活动来减少徘徊和依附的自我意识。
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来源期刊
Human Brain Mapping
Human Brain Mapping 医学-核医学
CiteScore
8.30
自引率
6.20%
发文量
401
审稿时长
3-6 weeks
期刊介绍: Human Brain Mapping publishes peer-reviewed basic, clinical, technical, and theoretical research in the interdisciplinary and rapidly expanding field of human brain mapping. The journal features research derived from non-invasive brain imaging modalities used to explore the spatial and temporal organization of the neural systems supporting human behavior. Imaging modalities of interest include positron emission tomography, event-related potentials, electro-and magnetoencephalography, magnetic resonance imaging, and single-photon emission tomography. Brain mapping research in both normal and clinical populations is encouraged. Article formats include Research Articles, Review Articles, Clinical Case Studies, and Technique, as well as Technological Developments, Theoretical Articles, and Synthetic Reviews. Technical advances, such as novel brain imaging methods, analyses for detecting or localizing neural activity, synergistic uses of multiple imaging modalities, and strategies for the design of behavioral paradigms and neural-systems modeling are of particular interest. The journal endorses the propagation of methodological standards and encourages database development in the field of human brain mapping.
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