Avancini Chiara, Ciria Luis F, Alameda Clara, Palenciano Ana F, Canales-Johnson Andrés, Bekinschtein Tristan A, Sanabria Daniel
Mind, Brain and Behavior Research Center, Department of Experimental Psychology, University of Granada, Granada, Spain.
Cambridge Consciousness and Cognition Laboratory, Department of Psychology, University of Cambridge, Cambridge, UK.
Commun Biol. 2024 Dec 5;7(1):1625. doi: 10.1038/s42003-024-06851-w.
Physiological activation fluctuates throughout the day. Previous studies have shown that during periods of reduced activation, cognitive control remains resilient due to neural compensatory mechanisms. In this study, we investigate the effects of high physiological activation on both behavioural and neural markers of cognitive control. We hypothesize that while behavioural measures of cognitive control would remain intact during periods of high activation, there would be observable changes in neural correlates. In our electroencephalography study, we manipulate levels of physiological activation through physical exercise. Although we observe no significant impact on behavioural measures of cognitive conflict, both univariate and multivariate time-frequency markers prove unreliable under conditions of high activation. Moreover, we observe no modulation of whole-brain connectivity measures by physiological activation. We suggest that this dissociation between behavioural and neural measures indicates that the human cognitive control system remains resilient even at high activation, possibly due to underlying neural compensatory mechanisms.
生理激活在一天中会有所波动。先前的研究表明，在激活水平降低的时期，由于神经补偿机制，认知控制仍具有弹性。在本研究中，我们调查了高生理激活对认知控制的行为和神经标志物的影响。我们假设，虽然在高激活时期认知控制的行为指标将保持不变，但神经关联会有可观察到的变化。在我们的脑电图研究中，我们通过体育锻炼来操纵生理激活水平。尽管我们观察到对认知冲突的行为指标没有显著影响，但单变量和多变量时频标志物在高激活条件下都被证明是不可靠的。此外，我们没有观察到生理激活对全脑连接性指标的调节作用。我们认为，行为和神经指标之间的这种分离表明，即使在高激活状态下，人类认知控制系统仍具有弹性，这可能是由于潜在的神经补偿机制。
