Brain structural basis of individual variability in dream recall frequency
Brain structural basis of individual variability in dream recall frequency
复制标题
梦回忆频率个体差异的大脑结构基础
DOI：
10.1007/s11682-018-9964-3
复制
发表时间：
2019
影响因子：
3.2
通讯作者：
Gao Jia Hong
中科院分区：
文献类型：
--
作者：
Zhou Shuqin;Xu Jing;Su Zihui;Li Yuezhen;Shao Yan;Sun Hongqiang;Zhu Huaiqiu;Zou Qihong;Gao Jia Hong
最近的神经影像学研究表明，梦回忆频率（DRF）的个体间差异与静息状态下的局部脑血流和任务引起的大脑激活有关。然而，支撑 DRF 个体间差异的大脑结构仍不清楚。本研究的目的是探讨大脑结构特征与 DRF 之间的关系。我们收集了 43 名健康志愿者的 T1 加权和扩散张量磁共振成像数据。 DRF 是从为期两周的睡眠日记中获得的，其中包含每天早上醒来时梦境回忆的主观报告。采用一般线性模型分析来评估大脑结构特征（皮质体积和白质完整性）与DRF之间的关系。不仅右侧梭状回和海马旁回内侧部分的皮质体积，而且与这些区域相连的白质纤维的各向异性分数均与 DRF 显着负相关，并且这些关系不受规律睡眠的调节。这些发现提供了直接证据，表明大脑结构特征与 DRF 的个体间变异相关，并可能帮助我们更好地理解梦境回忆背后的大脑结构机制。
Recent neuroimaging studies have indicated that inter-individual variability in dream recall frequency (DRF) is associated with both resting-state regional cerebral blood flow and task-induced brain activations. However, the brain structure underpinning this inter-individual variability in DRF remains unclear. The aim of the current study is to investigate the relationship between brain structural characteristics and DRF. We collected both T1-weighted and diffusion tensor magnetic resonance imaging data from 43 healthy volunteers. DRF was obtained from a two-week sleep diary with a subjective report of dream recall upon waking every morning. General linear model analysis was used to evaluate the relationship between brain structural characteristics (cortical volume and white matter integrity) and DRF. Not only the cortical volume of the medial portion of the right fusiform gyrus and parahippocampal gyrus but also the fractional anisotropy of white matter fibers connected to these regions were significantly negatively correlated with DRF, and these relationships were not modulated by a regular sleep. These findings provide direct evidence that brain structural characteristics are associated with inter-individual variability in DRF and may help us to better understand the structural mechanisms in the brain underlying dream recall.