Güldener Lasse, Jüllig Antonia, Soto David, Pollmann Stefan
Department of Experimental Psychology, Institute of Psychology, Otto-von-Guericke-University, Magdeburg, Germany.
Department of Experimental Psychology, Institute of Psychology, Otto-von-Guericke-University, Magdeburg, Germany.
Cortex. 2022 Aug;153:146-165. doi: 10.1016/j.cortex.2022.03.024. Epub 2022 May 10.
Adapting to novelty is essential for an organism's survival in an uncertain world. Neuroimaging evidence consistently links the anterior prefrontal, specifically the frontopolar cortex (FPC; BA10), to exploratory reweighting of attentional weights thereby underscoring the role of the FPC in responding to environmental changes that are often complex and may occur very rapidly. Here we report new evidence showing that the FPC serves a role in attentional reallocation even in the absence of conscious awareness. Both mass-univariate and multivariate pattern analyses of fMRI data revealed that the right FPC and other attention-related areas not only are sensitive to unaware changes in the relevant stimulus dimension, but also that unconsciously processed information of the novel stimulus was globally represented across these regions. Our results indicate that unconsciously processed information can reach a global level of representation outside the occipitotemporal cortex, and that the FPC is crucial for the reweighting of selection biases in the absence of visual awareness.
在不确定的世界中，适应新事物对生物体的生存至关重要。神经影像学证据一致表明，前额叶前部，特别是额极皮质（FPC；BA10），与注意力权重的探索性重新加权有关，从而突出了FPC在应对通常复杂且可能迅速发生的环境变化中的作用。在此，我们报告新的证据表明，即使在没有意识觉知的情况下，FPC在注意力重新分配中也发挥作用。功能磁共振成像（fMRI）数据的大规模单变量和多变量模式分析均显示，右侧FPC和其他与注意力相关的区域不仅对相关刺激维度中未被意识到的变化敏感，而且新刺激的无意识处理信息在这些区域中得到了全局表征。我们的结果表明，无意识处理的信息可以在枕颞叶皮质之外达到全局表征水平，并且FPC对于在没有视觉意识的情况下重新加权选择偏差至关重要。
