Brock University, St. Catharines, Ontario, Canada.
Brock University, St. Catharines, Ontario, Canada.
Conscious Cogn. 2019 Oct;75:102803. doi: 10.1016/j.concog.2019.102803. Epub 2019 Aug 28.
Whether individuals focus their attention on the global level (the forest), or local elements that make up the stimulus (the trees) remains relatively stable over a period of at least 10 days in multiple global/local measures. Greater attentional approach tendencies and vigilance, which are likely reflected by lower alpha and higher beta power, are associated with narrowed attentional breadth. The current study investigated whether individual differences in the propensity for individuals to focus on the global or local levels (attentional breadth) can be predicted based on EEG power in alpha and its neighbouring frequency bands during a preceding rest period. Greater levels of posterior alpha and preponderance of alpha-to-beta power at rest were associated with greater attentional breadth during the subsequent Navon letters task. These results suggest that neural indices of attentional approach when not engaged in a goal-orientated task are associated with individual differences in attentional breadth.
无论个体将注意力集中在全局水平（森林）上，还是集中在构成刺激的局部元素（树木）上，在多种全局/局部测量中，这种相对稳定的状态至少会持续 10 天。更大的注意力趋近倾向和警觉性，可能反映在较低的阿尔法和较高的贝塔功率上，与注意力广度的缩小有关。本研究调查了在先前的休息期间，基于 EEG 功率在阿尔法及其相邻频段，是否可以预测个体倾向于关注全局或局部水平（注意力广度）的个体差异。更大的后阿尔法水平和休息时阿尔法到贝塔功率的优势与随后的纳冯字母任务中的更大注意力广度相关。这些结果表明，当不从事目标导向任务时，注意力趋近的神经指数与注意力广度的个体差异有关。
