Illusory percepts of moving patterns due to discrete temporal sampling

被引：35

作者：

Simpson, WA

Shahani, U

Manahilov, V

机构：

[1] DRDC Toronto, Simulat & Modeling Sect, Toronto, ON M3M 3B9, Canada

[2] York Univ, Ctr Vis Res, N York, ON M3J 1P3, Canada

[3] Univ Toronto, Scarborough Coll, Dept Life Sci, Scarborough, ON M1C 1A4, Canada

[4] Glasgow Caledonian Univ, Dept Visual Sci, Glasgow G40 BA, Lanark, Scotland

来源：

NEUROSCIENCE LETTERS | 2005年 / 375卷 / 01期

关键词：

motion perception; motion illusions;

D O I：

10.1016/j.neulet.2004.10.059

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Continuously, moving objects under continuous illumination can be seen to move in a direction opposite to their actual motion. This illusory reversed motion can be explained as due to discrete temporal sampling of the moving stimulus by the visual system. If temporal sampling lies behind the illusory motion, then the probability of illusory motion should depend on the temporal frequency of the motion stimulus. By presenting contracting bull's-eye gratings of various spatial frequencies we were able to tease apart the drift speed and temporal frequency. The prevalence of illusory percepts depended on the temporal frequency, not the speed. The data suggest that the human visual system samples the incoming stimulation at a rate near 16 Hz. Crown Copyright (C) 2004 Published by Elsevier Ireland Ltd. All rights reserved.

引用

页码：23 / 27

页数：5

共 26 条

[1] POST-RECEPTORAL UNDERSAMPLING IN NORMAL HUMAN PERIPHERAL-VISION [J].