Department of Psychiatry, Graduate School of Medicine, Yokohama City University.
Psychiatry Clin Neurosci. 2014 Oct;68(10):752-8. doi: 10.1111/pcn.12190. Epub 2014 Jun 9.
The aim of this study was to investigate the biological background of the five-factor model using near-infrared spectroscopy and cognitive tasks.
Twenty right-handed healthy volunteers participated in this study. Their personality traits were assessed using the NEO Five-Factor Inventory, and changes in oxyhemoglobin concentration ([oxy-Hb]) were measured during cognitive tasks using a wireless near-infrared spectroscopy.
The average [oxy-Hb] in the right prefrontal area had a significant positive correlation with the agreeableness score during the Stroop test at incongruent stimulus block. For the verbal fluency task, there were no significant correlations of bilateral [oxy-Hb] changes with any items.
Higher agreeableness scores may involve less suppression to the default mode network related to resting state brain function. Keeping selective attention during the Stroop test may require more power of concentration than retrieving words during the verbal fluency task.
本研究旨在使用近红外光谱和认知任务探究五因素模型的生物学背景。
20 名右利手健康志愿者参与了本研究。他们的人格特质采用 NEO 五因素量表进行评估，同时使用无线近红外光谱仪在认知任务期间测量氧合血红蛋白浓度([oxy-Hb])的变化。
在 Stroop 测试不一致刺激块期间，右侧前额区域的平均[oxy-Hb]与宜人性评分呈显著正相关。对于言语流畅性任务，双侧[oxy-Hb]变化与任何项目均无显著相关性。
更高的宜人性评分可能涉及对与静息状态脑功能相关的默认模式网络的抑制作用较小。在 Stroop 测试中保持选择性注意力可能比在言语流畅性任务中检索单词需要更高的注意力集中能力。
