Department of Psychology, Second University of Naples, Via Vivaldi 43, 81100 Caserta, Italy.
Physiol Behav. 2012 Jan 18;105(2):332-6. doi: 10.1016/j.physbeh.2011.08.004. Epub 2011 Aug 11.
Personality dimensions have been associated with different psychobiological systems. However, no agreement exists in literature on a specific role of a single neurotransmitter for each of the dimensions investigated. We studied the relationship of Neuroticism, Extraversion and Psychoticism as assessed by Eysenck Personality Inventory (EPI) with spontaneous eye blink rate (BR), a non-invasive measure of central dopamine activity. A total of sixty-three healthy subjects (40 females, 23 males, mean age 24.2±3.9) were studied. Spontaneous blink rate and time of blink suppression were assessed by EOG measurement. Levels of Extraversion and Neuroticism were inversely correlated. In contrast with previous findings, a significant correlation between blink rate measures and Neuroticism was found. No significant correlation between blink measures and either Extraversion, or Psychoticism were found. The results appear consistent with a lower threshold for activation in neuroticism as suggested by Eysenck's original model.
人格维度与不同的心理生物学系统有关。然而，文献中对于每种研究的维度都没有特定的单一神经递质的作用达成一致意见。我们研究了 Eysenck 人格问卷（EPI）评估的神经质、外向性和精神质与自发眨眼率（BR）之间的关系，BR 是一种中枢多巴胺活动的非侵入性测量。共研究了 63 名健康受试者（40 名女性，23 名男性，平均年龄 24.2±3.9）。通过眼动测量评估自发眨眼率和眨眼抑制时间。外向性和神经质水平呈负相关。与先前的发现相反，发现眨眼率测量值与神经质之间存在显著相关性。没有发现眨眼测量值与外向性或精神质之间存在显著相关性。结果似乎与 Eysenck 原始模型所提出的神经质的激活阈值较低相一致。
