Lu Mingou, Doñamayor Nuria, Münte Thomas F, Bahlmann Jörg
Department of Neurology, University of Lübeck, Germany; Department of Neurology, First Hospital of Dalian Medical University, Dalian, China.
Department of Neurology, University of Lübeck, Germany; Department of Psychiatry, University of Cambridge, UK.
Behav Brain Res. 2017 Mar 1;320:154-164. doi: 10.1016/j.bbr.2016.12.012. Epub 2016 Dec 12.
Recent models of human behavior suggest a hierarchical organization of cognitive control processes. These models assume that different sub-goals of cognitive control processes are nested in each other, such that higher-level sub-goals can only be accomplished when lower-level sub-goals have been realized. While the neuroanatomical localization of this organizational principle has already been successfully tested, the exact temporal nature remains to be explored. The present study applied event-related potentials (ERPs) and investigated neural oscillations during performance of three different nested cognitive control tasks. Results demonstrated a parametric modulation of the P300 component as well as beta-band (13-25Hz) oscillations as a function of different levels of cognitive control. Moreover, conditions requiring flexible updating of information exhibited similar alpha-band (8-13Hz) oscillations, which differed from the condition without flexible updating (low-level). These results suggest dissociable mechanisms of flexible information updating and complexity of cognitive control processes indexed by different oscillatory effects.
近期的人类行为模型表明认知控制过程存在层次结构组织。这些模型假定认知控制过程的不同子目标相互嵌套，以至于只有在较低层次的子目标实现后，较高层次的子目标才能完成。虽然这一组织原则的神经解剖定位已得到成功验证，但其确切的时间特性仍有待探索。本研究应用事件相关电位（ERP）并在执行三种不同的嵌套认知控制任务期间研究神经振荡。结果表明，P300成分以及β波段（13 - 25Hz）振荡作为不同认知控制水平的函数存在参数调制。此外，需要灵活更新信息的条件表现出类似的α波段（8 - 13Hz）振荡，这与无灵活更新的条件（低水平）不同。这些结果表明，由不同振荡效应索引的灵活信息更新机制和认知控制过程的复杂性是可分离的。
