School of Education Science, Huizhou University, Huizhou 516007, China.
Brain and Cognition Unit, Department of Psychology, Saarland University, Saarbruecken 66123, Germany.
Brain Res. 2020 Dec 1;1748:147077. doi: 10.1016/j.brainres.2020.147077. Epub 2020 Aug 27.
Associative recognition requires discriminating between old items and conjunction lures constructed by recombining elements from two different study items. This task can be solved not only by recollection but also by familiarity if the to-be-remembered stimuli are perceived as a unitized representation. In two event-related potential (ERP) studies, we provide evidence for the integration of internal and external facial features by showing that the early frontal old-new effect (considered a correlate of familiarity) is modulated by the specific combination of facial features. Participants studied faces consisting of internal features (eyes, eyebrows, nose, and mouth) paired with external features (hair, head shape, and ears). During the testing phase, intact, recombined, and new faces were presented. Recombined faces consisted of internal and external features taken from two different studied faces. The results showed that at the frontal sites, during the time window from 300 to 500 ms, ERPs to intact faces were more positive than those to new and recombined faces; the latter two did not differ from one another. The late parietal effect was observed only after a more extended study phase in Experiment 2. We take the modulation of the early frontal old-new effect as evidence for the contribution of familiarity to associative recognition for combinations of internal and external facial features.
联想识别要求区分旧项目和由两个不同学习项目的元素重新组合而成的结合诱饵。如果要记住的刺激被感知为一个单元化的表示，那么这个任务不仅可以通过回忆来解决，也可以通过熟悉度来解决。在两项事件相关电位 (ERP) 研究中，我们通过证明早期额叶新旧效应（被认为是熟悉度的相关物）被面部特征的特定组合所调节，提供了内部和外部面部特征整合的证据。参与者研究了由内部特征（眼睛、眉毛、鼻子和嘴巴）与外部特征（头发、头部形状和耳朵）组成的面部。在测试阶段，呈现完整的、重组的和新的面部。重组的面部由来自两个不同学习的面部的内部和外部特征组成。结果表明，在额叶部位，在 300 到 500 毫秒的时间窗口内，完整面部的 ERP 比新的和重组的面部更积极；后两者彼此没有区别。在实验 2 中进行了更长的学习阶段后，才观察到晚期顶叶效应。我们将早期额叶新旧效应的调制视为熟悉度对内部和外部面部特征组合的联想识别的贡献的证据。
