The attentional blink (AB) demonstrates that recognizing the second of two targets (T1 and T2) is difficult when they appear in close succession in a rapid serial visual presentation (RSVP) stream. The AB has been widely accepted as a suppression of T2 processing at the postperceptual stage. The current event-related potential study updates this view by demonstrating the existence of an early perceptual locus of suppression during the AB. Using line drawings of real-life objects as RSVP items, we required participants in Experiment 1 to either discriminate the exact identities or simply classify the object categories of T1 and T2, and in Experiment 2, we instructed participants to discriminate either T1 and T2 identities (dual-target task) or only T2 identity (single-target task) to invalidate the temporal expectation as an alternative account. The results of Experiments 1 and 2 showed that the T2-elicited first positive peak (P1) component was consistently decreased at Lag 3 whenever a dual-target, but not single-target, task was required, and the magnitude of this P1 suppression was significantly predictive of the behavioral AB magnitude in each dual-target task. When the RSVP items were substituted by classic but size-matched alphanumeric characters in Experiment 3, no P1 suppression was evident as expected, ruling out the large stimulus size as an alternative interpretation. These findings provide the strongest evidence to date that the AB can begin to suppress T2 processing at a very early perceptual stage, at least when observers encounter RSVP items of real-life objects, which calls for more flexible cognitive models for the AB. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

中文翻译：

---

注意眨眼期间的早期知觉抑制点。


注意眨眼 (AB) 表明，当两个目标（T1 和 T2）紧密连续出现在快速串行视觉呈现 (RSVP) 流中时，识别它们中的第二个是很困难的。 AB 已被广泛认为是知觉后阶段 T2 处理的抑制。目前的事件相关电位研究通过证明 AB 期间存在早期知觉抑制位点来更新这一观点。使用现实生活中物体的线条图作为 RSVP 项目，我们要求实验 1 中的参与者要么区分 T1 和 T2 的确切身份，要么简单地对 T1 和 T2 的物体类别进行分类，而在实验 2 中，我们指示参与者区分 T1 和 T2 身份（双目标任务）或仅 T2 身份（单目标任务）以使作为替代帐户的时间期望无效。实验 1 和 2 的结果表明，每当需要双目标而非单目标任务时，T2 引发的第一个正峰值 (P1) 分量在滞后 3 时持续下降，并且这种 P1 抑制的幅度为显着预测每个双目标任务中的行为 AB 幅度。当实验 3 中 RSVP 项目被经典但大小匹配的字母数字字符取代时，没有像预期的那样明显的 P1 抑制，排除了大刺激大小作为替代解释的可能性。这些发现提供了迄今为止最有力的证据，表明 AB 可以在非常早的知觉阶段开始抑制 T2 处理，至少当观察者遇到现实生活中物体的 RSVP 项目时，这需要更灵活的 AB 认知模型。 （PsycInfo 数据库记录 (c) 2024 APA，保留所有权利）。