Yan Bingxin, Wang Yifan, Yang Yuxuan, Wu Di, Sun Kewei, Xiao Wei
Department of Military Medical Psychology, Air Force Medical University, Xi'an 710032, China.
Brain Sci. 2024 Oct 10;14(10):1013. doi: 10.3390/brainsci14101013.
Research about the impact of acute stress on inhibitory control remains a contentious topic, with no consensus reached thus far. This study aims to investigate the effects of acute stress on an individual's inhibitory control abilities and to elucidate the underlying neural mechanisms by analyzing resting state electroencephalogram (EEG) data.
We recruited 32 male college students through participant recruitment information to undergo within-subject experiments under stress and non-stress conditions. Physiological indicators (cortisol and heart rate), self-report questionnaires, and behavioral data from the Stroop task were collected before, during, and after the experiment. Additionally, a five-minute eyes closed resting state EEG data collection was conducted during the Stroop task before.
(1) Acute stress led to a reduction in the conflict effect during the participants' Stroop task in individuals. (2) Stress resulted in an increase in the power of the beta in the resting state EEG. (3) Acute stress caused an increase in the duration of class D and an increase in the transition probabilities from classes C and B to class D in the microstates of the resting state EEG. (4) Acute stress leads to an increase in beta power values in individuals' resting state EEGs, which is significantly negatively correlated with the reduction of the conflict effect in the Stroop task under stress.
Acute stress can enhance individuals' attentional level, thereby promoting inhibitory control performance.
关于急性应激对抑制控制的影响的研究仍是一个有争议的话题，目前尚未达成共识。本研究旨在通过分析静息态脑电图（EEG）数据，探讨急性应激对个体抑制控制能力的影响，并阐明其潜在的神经机制。
我们通过招募信息招募了32名男性大学生，让他们在应激和非应激条件下进行受试者内实验。在实验前、实验期间和实验后收集生理指标（皮质醇和心率）、自我报告问卷以及Stroop任务的行为数据。此外，在之前的Stroop任务期间进行了5分钟的闭眼静息态EEG数据采集。
（1）急性应激导致个体在Stroop任务中的冲突效应降低。（2）应激导致静息态EEG中β波功率增加。（3）急性应激导致静息态EEG微状态中D类持续时间增加，以及从C类和B类到D类的转换概率增加。（4）急性应激导致个体静息态EEG中β波功率值增加，这与应激下Stroop任务中冲突效应的降低显著负相关。
急性应激可提高个体的注意力水平，从而促进抑制控制表现。
