再探 Perky 效应：表象在高知觉水平下产生阻碍，而在低知觉水平下则产生帮助。

The Perky effect revisited: Imagery hinders perception at high levels, but aids it at low.

机构信息

Department of Psychology, 125 NI, Northeastern University, Boston, MA 02115, USA.

Department of Psychology, 125 NI, Northeastern University, Boston, MA 02115, USA; Wolpe Center, Dept. of Transportation, Cambridge, MA 02142, USA.

出版信息

Vision Res. 2020 Feb;167:8-14. doi: 10.1016/j.visres.2019.12.004. Epub 2019 Dec 27.

DOI:10.1016/j.visres.2019.12.004

PMID:31887539

Abstract

Visual, although not auditory, imagery typically interferes with visual acuity: the so-called Perky effect. However, visual images can facilitate detection of visual Gabor patterns. Here we report that this discrepancy is not due so much to the class of stimuli but primarily to the level of accuracy; visual imagery interferes with acuity when performance is good but facilitates it when performance is poor. This finding is analogous to the 'dipper' function obtained when visual stimuli that mask visual targets when above threshold improve target detection near threshold.

摘要

视觉表象通常会干扰视力，尽管不是听觉，但通常会干扰视力：这就是所谓的珀基效应。然而，视觉图像可以促进视觉 Gabor 模式的检测。在这里，我们报告说这种差异与其说是由于刺激的类别，不如说是由于准确性的水平；当表现良好时，视觉表象会干扰视力，但当表现不佳时，它会促进视力。这一发现类似于当视觉刺激在阈值以上掩蔽视觉目标时会获得的“勺子”功能，当视觉刺激在阈值附近改善目标检测时，它会提高目标检测。