School of Psychology, Shaanxi Normal University, Xi'an, China.
Key Laboratory of Modern Teaching Technology, Ministry of Education, Shaanxi Normal University, Xi'an, China.
Conscious Cogn. 2021 May;91:103131. doi: 10.1016/j.concog.2021.103131. Epub 2021 Apr 13.
This study aimed to investigate how acute stress impinges on individual's cognitive inhibition and response inhibition abilities. Electroencephalography was adopted when 35 healthy adult females performing the No Go Flanker task before and after the Trier Social Stress Test. Both inhibition processes evoked N2 and P3 components, but only the response inhibition evoked the late positive potential (LPP), indicating the response inhibition needed continuous cognitive effort to inhibit the prepotent response. The N2 and the P3 amplitudes were decreased, while the LPP amplitudes were increased under acute stress. These results suggested that acute stress caused the detrimental effect by occupying cognitive resources. Contrastingly, individuals actively regulated and made more efforts to counteract the detrimental effect of acute stress on response inhibition. Thus, acute stress impaired cognitive inhibition but did not affect response inhibition.
本研究旨在探讨急性应激如何影响个体的认知抑制和反应抑制能力。当 35 名健康成年女性在进行特里尔社会应激测试前后执行“不做反应”Flanker 任务时，采用了脑电图。两种抑制过程都引起了 N2 和 P3 成分，但只有反应抑制引起了晚期正电位（LPP），表明反应抑制需要持续的认知努力来抑制优势反应。在急性应激下，N2 和 P3 的振幅降低，而 LPP 的振幅增加。这些结果表明，急性应激通过占用认知资源造成了有害影响。相比之下，个体积极调节并做出更多努力来对抗急性应激对反应抑制的有害影响。因此，急性应激会损害认知抑制，但不会影响反应抑制。
