连续闪烁抑制范式实验平台设计及其效果检测

Design and evaluation of an experimental platform based on continuous flash suppression

连续闪烁抑制范式(continuous flash suppression paradigm,CFS)是当前最新的意识下视觉感知研究范式。然而,由于目前尚缺乏成熟的可视化的CFS范式视觉实验平台,严重制约了相关研究的进展。鉴于此,本文采用标准化精密光学元件搭建了CFS范式实验硬件系统,利用MATLAB下的Psychtoolbox工具箱研制了可视化CFS范式实验软件系统,成功试制了CFS范式视觉实验平台。其中,实验软件系统不仅提供了功能完备、设置方便的实验参数可视化设置界面,而且开发并集成了具备不同物理特性的蒙德里安掩蔽图片自动生成程序。为验证CFS范式视觉实验平台的性能,本文设计并开展了图片和视频刺激的意识下视觉感知实验,展现了实验平台良好的工作性能。总体而言,视觉实验平台实验设计方便、掩蔽效果良好、程序运行稳定、数据存取便捷,可以更好地服务于CFS相关心理物理学实验的设计与开展,有效提升无意识视觉认知研究的水平。

The continuous flash suppression paradigm(CFS)is currently the most up-to-date subconscious visual perception research paradigm.However,due to the lack of mature visual experiment platform,the progress of CFS-related research is seriously restricted.In view of this,our team have designed a CFS-based visualization experiment platform including a hardware system developed with standardized precision optical components and a software system developed with Psychtoolbox under MATLAB.Among them,the experimental software system not only provides a fully functional and convenient visualization setting interface for experimental parameters,but also creates an automatic program for the generation of Mondrian masking images with different physical features.In order to evaluate the performance of the experimental platform,we have carried out a subconscious visual perception experiment with picture and video stimuli.The results show that the experimental platform can provide convenient experimental settings,good masking effect,stable program running,and easy data access.It can better serve the design and development of psychophysical experiments related to CFS and effectively improve the level of unbconscious visual cognition research.