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首页> 外文期刊>Brain research bulletin >Individual differences in personality traits reflect structural variance in specific brain regions.
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Individual differences in personality traits reflect structural variance in specific brain regions.

机译：人格特质的个体差异反映了特定大脑区域的结构差异。

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摘要

Personality dimensions such as novelty seeking (NS), harm avoidance (HA), reward dependence (RD) and persistence (PER) are said to be heritable, stable across time and dependent on genetic and neurobiological factors. Recently a better understanding of the relationship between personality traits and brain structures/systems has become possible due to advances in neuroimaging techniques. This Magnetic Resonance Imaging (MRI) study investigated if individual differences in these personality traits reflected structural variance in specific brain regions. A large sample of eighty five young adult participants completed the Three-dimensional Personality Questionnaire (TPQ) and had their brain imaged with MRI. A voxel-based correlation analysis was carried out between individuals' personality trait scores and grey matter volume values extracted from 3D brain scans. NS correlated positively with grey matter volume in frontal and posterior cingulate regions. HA showed a negative correlation with grey matter volume in orbito-frontal, occipital and parietal structures. RD was negatively correlated with grey matter volume in the caudate nucleus and in the rectal frontal gyrus. PER showed a positive correlation with grey matter volume in the precuneus, paracentral lobule and parahippocampal gyrus. These results indicate that individual differences in the main personality dimensions of NS, HA, RD and PER, may reflect structural variance in specific brain areas.
机译：人格维度，例如寻求新奇（NS），避免伤害（HA），奖励依赖（RD）和持久性（PER）被认为是可遗传的，跨时间稳定的，并取决于遗传和神经生物学因素。最近，由于神经成像技术的进步，对人格特质与大脑结构/系统之间关系的更好理解成为可能。这项磁共振成像（MRI）研究调查了这些人格特征的个体差异是否反映了特定大脑区域的结构差异。八十五名年轻成人参与者的大量样本完成了三维人格问卷（TPQ），并用MRI对他们的大脑成像。在个人的人格特质得分和从3D脑部扫描中提取的灰质体积值之间进行了基于体素的相关分析。 NS与额叶和后扣带区域的灰质体积呈正相关。 HA与眶额，枕叶和顶叶结构的灰质体积呈负相关。 RD与尾状核和直肠额回中的灰质含量呈负相关。 PER显示与前胎，中央小叶和海马旁回的灰质体积呈正相关。这些结果表明，NS，HA，RD和PER在主要人格维度上的个体差异可能反映了特定大脑区域的结构差异。

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