Time course and neural locus of the Flashed Face Distortion Effect

IF 1.5 4区心理学 Q4 NEUROSCIENCES

Vision Research Pub Date : 2024-09-30 DOI:10.1016/j.visres.2024.108492

Yi Gao , Kamilla N. Miller , Michael A. Webster , Michael A. Crognale , Fang Jiang

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Abstract

Viewing a rapid sequence of face images shown in the periphery can lead to large caricature-like distortions in the perceived images, a phenomenon known as the Flashed Face Distortion Effect (FFDE). The mechanisms underlying FFDE are poorly understood. Here we examined the timing and sites of the adaptation processes giving rise to the FFDE. To investigate the effects of presentation rate, we maintained consistent trial lengths while assessing how variations in the temporal frequencies of face presentation influenced the magnitude of face distortion and the averaging of facial expressions. Over a wide range of temporal frequencies (1.2–60 Hz) tested, we observed a decrease in FFDE strength as the presentation rate increased. To probe the neural sites of FFDE, we varied whether successive faces were presented to the same or different eyes using a dichoptic display. Distortion effects were comparable for monocular, binocular, and interocular conditions, yet much larger than a control condition where faces were presented with a temporal interval between successive images, suggesting a cortical locus for FFDE.

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闪烁脸部失真效应的时间过程和神经定位

观看外围显示的一连串快速人脸图像会导致感知图像出现类似漫画的大幅扭曲，这种现象被称为 "闪光人脸扭曲效应"（FFDE）。人们对 FFDE 的内在机制知之甚少。在这里，我们研究了产生 FFDE 的适应过程的时间和部位。为了研究呈现率的影响，我们保持了一致的试验长度，同时评估了人脸呈现的时间频率变化如何影响人脸失真的程度和面部表情的平均化。在测试的广泛时间频率（1.2-60 Hz）范围内，我们观察到随着呈现率的增加，FFDE 的强度有所下降。为了探究 FFDE 的神经部位，我们使用二向色显示屏来改变连续的人脸是呈现给同一只眼睛还是不同的眼睛。在单眼、双眼和双眼间条件下，失真效应相当，但比在连续图像之间有时间间隔的情况下呈现人脸的对照条件下的失真效应要大得多，这表明 FFDE 存在于大脑皮层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vision Research 医学-神经科学

CiteScore

3.70

自引率

16.70%

发文量

111

审稿时长

66 days

期刊介绍： Vision Research is a journal devoted to the functional aspects of human, vertebrate and invertebrate vision and publishes experimental and observational studies, reviews, and theoretical and computational analyses. Vision Research also publishes clinical studies relevant to normal visual function and basic research relevant to visual dysfunction or its clinical investigation. Functional aspects of vision is interpreted broadly, ranging from molecular and cellular function to perception and behavior. Detailed descriptions are encouraged but enough introductory background should be included for non-specialists. Theoretical and computational papers should give a sense of order to the facts or point to new verifiable observations. Papers dealing with questions in the history of vision science should stress the development of ideas in the field.