School of Psychology, Central China Normal University, Wuhan, China.
Exp Brain Res. 2020 Apr;238(4):1025-1033. doi: 10.1007/s00221-020-05774-2. Epub 2020 Mar 20.
This study tested whether one aspect of cognitive processing, namely visual attentional scope, was more narrow in an Internet environment compared to a daily-life environment. Words related to the Internet and words related to daily life were used as priming stimuli before participants had to respond to a Navon letter to assess attention to global vs. local targets. In Experiment 1, reaction time during the Navon task showed that global processing priority was greater after daily words than after Internet words. In Experiment 2, ERP data showed significantly larger P2 amplitudes induced by global letters than local letters in the two conditions. After Internet-word priming, a smaller N2 amplitude was induced by local letters than by global letters, but this difference was not observed after daily-word priming. The influence of priming on attentional scope might have occurred at the stage of cognitive control, indicating that it was easier to resist the interfering effect of global letters in the Internet-word condition than in the daily-word condition. The results of both experiments suggest that attentional scope is narrower in an Internet environment than in a daily-life environment.
本研究旨在测试认知加工的一个方面，即视觉注意广度，在互联网环境与日常生活环境中哪个更狭窄。在参与者必须对纳冯字母进行反应以评估对全局与局部目标的注意力之前，使用与互联网和日常生活相关的词作为启动刺激。在实验 1 中，纳冯任务的反应时间表明，在日常生活词之后，全局处理优先级高于互联网词之后。在实验 2 中，ERP 数据显示，在两种条件下，全局字母引起的 P2 振幅明显大于局部字母。在互联网词启动后，局部字母引起的 N2 振幅比全局字母小，但在日常生活词启动后没有观察到这种差异。对注意广度的启动影响可能发生在认知控制阶段，这表明在互联网词条件下比在日常生活词条件下更容易抵抗全局字母的干扰效应。两项实验的结果均表明，在互联网环境中，注意广度比日常生活环境更狭窄。
