摘要
双眼竞争(binocular rivalry)是指同一感知空间对双眼的刺激不一致且不变时主观感知却在变化的生理现象。它是研究意识与心理的一种标准范式。其客观检测方法一直是心理学和神经科学热衷的技术问题。稳态视觉诱发电位(steady-state visual evoked potential,SSVEP)是由周期视觉刺激信号引起的高信噪比脑电响应,常用于客观标记被识别或感知的目标。因此,将SSVEP用作双眼竞争中感知状态的客观检测指标将为研究双眼竞争的机理及应用拓展新的思路。本文基于主动式快门3D眼镜,使用DirectX-3D video技术和OpenGL技术完成基于多频率SSVEP的双眼竞争刺激平台搭建工作。并且本文设计了标准的双眼竞争实验验证了系统的可行性,该系统可成功实现双眼竞争现象中主观感知的客观跟随。
Binocular rivalry describes a physiological phenomenon that different stimuli to each eye maintain consistent while the perception alternates spontaneously, which was considered as a standard research paradigm for cognition and psychology. Its objective detection has always been a hot spot in psychology and Neuroscience. Steady-state visual evoked potential （SSVEP）, a kind of EEG response with high signal-to-noise ratio, arisen by periodic visual stimulus, is commonly used as an objective marker for the identified or perceived goals. Therefore, the combination of SSVEP and binocular rivalry makes the objective detection of perception possible and lays a new idea for the study of binocular rivalry mechanism and application. In this article It was constructed a new SSVEP stimulus system for binocular rivalry research, making use of 3D shutter glasses. It was given out the system-design methods with both DirectX and OpenGL technologies in detail. Furthermore, we set up a normal binocular rivalry experimental paradigm to verify its practicability. The recorded EEG envelopes of the two tagging frequencies alternated phase-locked, rise and fall, matching with the binocular rivalry behavioral data very well
出处
《生命科学仪器》
2013年第6期9-14,共6页
Life Science Instruments
基金
国家自然科学基金(91120007)
国家高技术研究发展计划(863
2012AA011601)
