Balada Ferran, Aymamí Neus, García Óscar, García Luis F, Aluja Anton
Lleida Institute for Biomedical Research, Dr. Pifarré Foundation, 25198 Lleida, Spain.
Department of Psychobiology and Methodology of Health Sciences, Faculty of Psychology, Autonomous University of Barcelona, 08193 Barcelona, Spain.
Behav Sci (Basel). 2025 May 9;15(5):647. doi: 10.3390/bs15050647.
This study investigated prefrontal cortex activity during the viewing and evaluation of pictures depicting scenarios with varying levels of danger, with a focus on the modulatory effects of personality traits and decision-making styles. The study sample included 120 male participants (44.4 ± 12.9 years) and 87 female participants (38.9 ± 10.5 years). Functional Near-Infrared Spectroscopy (fNIRS) was used to measure prefrontal oxygenation during the period of looking at pictures and the subsequent period of judging how dangerous they looked. Psychometric assessments included the Zuckerman-Kuhlman-Aluja Personality Questionnaire (ZKA-PQ) and the Melbourne Decision-Making Questionnaire (MDMQ). The results revealed significant time-by-region ( = 2.9, = 0.013) and danger level by region interactions ( = 2.8, = 0.021) during the viewing period. During the evaluation period, a significant time-by-region interaction was observed ( = 8.7, < 0.001). High sensation seekers exhibited reduced oxygenation levels in specific right prefrontal regions, reflecting a differential neural response to varying danger levels. Similarly, individuals with higher Aggressiveness and Extraversion displayed distinct oxygenation patterns during the evaluation phase, suggesting that personality traits influence prefrontal activity. However, no significant effects of decision-making styles were detected in either phase. These findings emphasise the pivotal role of the prefrontal cortex in assessing scene safety and highlight how neural responses are modulated by personality traits, rather than by decision-making styles.
本研究调查了在观看和评估描绘不同危险程度场景的图片时前额叶皮层的活动，重点关注人格特质和决策风格的调节作用。研究样本包括120名男性参与者（44.4±12.9岁）和87名女性参与者（38.9±10.5岁）。功能性近红外光谱技术（fNIRS）用于测量观看图片期间以及随后判断图片危险程度期间的前额叶氧合情况。心理测量评估包括祖克曼-库尔曼-阿卢亚人格问卷（ZKA-PQ）和墨尔本决策问卷（MDMQ）。结果显示，在观看期间存在显著的时间×区域交互作用（F = 2.9，p = 0.013）以及危险程度×区域交互作用（F = 2.8，p = 0.021）。在评估期间，观察到显著的时间×区域交互作用（F = 8.7，p < 0.001）。高感觉寻求者在右侧特定前额叶区域的氧合水平降低，这反映了对不同危险程度的差异性神经反应。同样，具有较高攻击性和外向性的个体在评估阶段表现出独特的氧合模式，表明人格特质会影响前额叶活动。然而，在两个阶段均未检测到决策风格的显著影响。这些发现强调了前额叶皮层在评估场景安全性中的关键作用，并突出了神经反应是如何由人格特质而非决策风格调节的。
