Previously, repulsive perceptual-shift face aftereffects have been reported. Here, we introduce a novel face adaptation method involving changes in contrast thresholds for face recognition. We find non-monotonic changes for adapted faces, with facilitation at short and suppression at long durations. Thresholds for unadapted faces were unaffected at short but elevated at long durations, more than those for the adapted face. A population-coding model showed that selective suppression of adapted representations cannot explain repulsive perceptual-bias aftereffects. The findings indicate greater complexity to adaptation, with facilitation, suppression, lateral inhibition of unadapted representations, and additional perceptual factors at long durations.

译文

以前,已经报道了令人厌恶的感知移位面部后效。在这里,我们介绍了一种新颖的人脸自适应方法,该方法涉及人脸识别对比度阈值的变化。我们发现适应的面孔具有非单调变化,在短时间内具有促进作用,在长时间内具有抑制作用。短时间不影响未适应面孔的阈值,但长时间不影响阈值,比适应面孔的阈值更大。人口编码模型表明,对适应性表示的选择性抑制不能解释令人反感的感知偏差后效。研究结果表明,适应的复杂性更高,包括促进,抑制,对不适应的表示的横向抑制以及长时间的其他感知因素。

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