Institute of Psychology, Friedrich Schiller University Jena, D-07743 Jena, Germany.
Department of Psychology, Philipps-Universität Marburg, D-35039 Marburg, Germany.
Cereb Cortex. 2022 Jun 7;32(12):2590-2601. doi: 10.1093/cercor/bhab366.
We explored the neural signatures of face familiarity using cross-participant and cross-experiment decoding of event-related potentials, evoked by unknown and experimentally familiarized faces from a set of experiments with different participants, stimuli, and familiarization-types. Human participants of both sexes were either familiarized perceptually, via media exposure, or by personal interaction. We observed significant cross-experiment familiarity decoding involving all three experiments, predominantly over posterior and central regions of the right hemisphere in the 270-630 ms time window. This shared face familiarity effect was most prominent across the Media and the Personal, as well as between the Perceptual and Personal experiments. Cross-experiment decodability makes this signal a strong candidate for a general neural indicator of face familiarity, independent of familiarization methods, participants, and stimuli. Furthermore, the sustained pattern of temporal generalization suggests that it reflects a single automatic processing cascade that is maintained over time.
我们使用跨参与者和跨实验的事件相关电位解码，探索了面孔熟悉度的神经特征，这些电位由来自一组具有不同参与者、刺激和熟悉类型的实验的未知和实验熟悉面孔引起。来自两性的人类参与者通过媒体暴露或个人互动进行感知熟悉化。我们观察到涉及所有三个实验的显著跨实验熟悉度解码，主要是在 270-630ms 的时间窗口内，在右半球的后区和中区。这种共享的面孔熟悉度效应在媒体和个人之间以及在感知和个人实验之间最为明显。跨实验的可解码性使得这个信号成为面孔熟悉度的一个强有力的候选者，它独立于熟悉化方法、参与者和刺激。此外，时间泛化的持续模式表明，它反映了一个单一的自动处理级联，随着时间的推移而保持。
