A method for creating and presenting video-recorded synchronized audiovisual stimuli at a high frame rate-which would be highly useful for psychophysical studies on, for example, just-noticeable differences and gating-is presented. Methods for accomplishing this include recording audio and video separately using an exact synchronization signal, editing the recordings and finding exact synchronization points, and presenting the synchronized audiovisual stimuli with a desired frame rate on a cathode ray tube display using MATLAB and Psychophysics Toolbox 3. The methods from an empirical gating study (Moradi, Lidestam, and Ronnberg, Frontiers in Psychology 4: 359, 2013) are presented as an example of the implementation of playback at 120 fps.
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机译：提出了一种用于以高帧频创建和呈现视频记录的同步视听刺激的方法，该方法对于心理生理研究（例如，显而易见的差异和门控）非常有用。实现此目的的方法包括使用精确的同步信号分别记录音频和视频，编辑记录并找到精确的同步点，以及使用MATLAB和Psychophysics Toolbox 3在阴极射线管显示器上以所需的帧频呈现同步的视听刺激。提供了来自经验门控研究的方法（Moradi，Lidestam和Ronnberg，Frontiers in Psychology 4：359，2013），作为实现120 fps播放的示例。
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