Wu Xiaoguang, Di Siyu, Ma Chao
Normal College, Shihezi University, Shihezi, People's Republic of China.
Center of Application of Psychological Research, Shihezi University, Shihezi, People's Republic of China.
Psychol Res Behav Manag. 2022 Oct 7;15:2915-2926. doi: 10.2147/PRBM.S382933. eCollection 2022.
The current research of the effect of acute stress on individual behavioral inhibition remains divergent. The present study aims to explore the effects of acute stress on behavioral inhibition in college students and to understand the neural oscillatory characteristics of their behavioral inhibition process.
We invited 27 college students (12 males and 15 females) to participate in the study. The experiment was conducted using the Trier Social Stress paradigm to evoke an acute stress state and an out-of-speech reading to set a neutral state. Participants completed a two-choice Oddball task in the acute stress state and the neutral state, respectively. We used a 64-channel EEG cap to record EEG data from university students during the experimental task. In combination with the ERO technique, we compared the reaction time, the number of errors, and the power of the alpha (8-13 Hz) and theta (4-8 Hz) frequency bands at the midline of the frontal lobe for subjects in both states. The correlation between the area under the stress area line and the alpha as well as theta frequency bands was also analyzed.
We found that in the two-choice Oddball task, the response inhibition time was shorter, the number of response errors decreased, and the alpha-band power values decreased in the acute stress state compared to the neutral state. For the standard stimulus, the theta-band power increase in the acute stress state.
Our results suggest that evoked acute stress promotes behavioral inhibition in college students by affecting their frontal midline neural oscillations.
目前关于急性应激对个体行为抑制作用的研究仍存在分歧。本研究旨在探讨急性应激对大学生行为抑制的影响，并了解其行为抑制过程的神经振荡特征。
我们邀请了27名大学生（12名男性和15名女性）参与研究。实验采用特里尔社会应激范式诱发急性应激状态，通过无声阅读设置中性状态。参与者分别在急性应激状态和中性状态下完成二选一Oddball任务。我们使用64通道脑电图帽在实验任务期间记录大学生的脑电图数据。结合事件相关振荡（ERO）技术，我们比较了两种状态下受试者的反应时间、错误数量以及额叶中线处α（8 - 13赫兹）和θ（4 - 8赫兹）频段的功率。还分析了应激面积线以下区域与α和θ频段之间的相关性。
我们发现，在二选一Oddball任务中，与中性状态相比，急性应激状态下反应抑制时间缩短，反应错误数量减少，α频段功率值降低。对于标准刺激，急性应激状态下θ频段功率增加。
我们的结果表明，诱发的急性应激通过影响大学生额叶中线神经振荡来促进其行为抑制。
