Norbury Ray
College of Health and Life Sciences, Division of Psychology, Brunel University London, Uxbridge, UK.
J Circadian Rhythms. 2020 May 8;18:3. doi: 10.5334/jcr.193.
Eveningness (a diurnal preference for evening time) is associated with a number of negative health outcomes and risk and prevalence for psychiatric disorder. Our understanding of the anatomical substrates of diurnal preference, however, is limited. The current study used Voxel-Based Morphometry to compare grey matter volume in a large sample ( = 3730) of healthy adults determined by questionnaire to be either definite morning-type or definite evening-type. Eveningness was associated with increased grey matter volume in precuneus, brain regions implicated in risk and reward processing (bilateral nucleus accumbens, caudate, putamen and thalamus) and orbitofrontal cortex. These results indicate an anatomical-basis for diurnal preference which may underlie reported differences in behaviour and brain function observed in these individuals.
夜型偏好（对夜间时间的昼夜偏好）与许多负面健康结果以及精神疾病的风险和患病率相关。然而，我们对昼夜偏好的解剖学基础的理解是有限的。当前研究使用基于体素的形态测量法，在一个由问卷确定为明确晨型或明确夜型的健康成年人的大样本（n = 3730）中比较灰质体积。夜型偏好与楔前叶、涉及风险和奖赏处理的脑区（双侧伏隔核、尾状核、壳核和丘脑）以及眶额皮质的灰质体积增加有关。这些结果表明昼夜偏好存在解剖学基础，这可能是这些个体中观察到的行为和脑功能差异的潜在原因。
