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目的研究不同转速旋转背景条件下,完成不同认知负荷视觉认知任务过程中的视认知早期加工的变化。方法受试者为20名健康右利手大学生,视觉背景分为白色背景与不同转速的模拟星空背景。要求受试者完成不反应、选择区分和选择心算任务,同时记录12导脑电数据。结果各种负荷任务中中央区的P1潜伏期最短,峰值波幅最高;与白色背景相比,各种速度旋转背景下,反应时及P1潜伏期缩短;与白色背景相比,不同旋转背景下完成选择区分及选择心算任务的P1峰值波幅升高。结论不同速度星空旋转背景加速了视觉认知的感知,在高负荷任务下增加启动效应。星空旋转不同角速度主要对区分反应的主动抑制加工过程产生影响。
OBJECTIVE: To study the changes of early visual processing in the process of visual cognitive tasks with different cognitive loads under different rotation speed and rotating background. Methods The subjects were 20 healthy Right-handed college students. The visual backgrounds were divided into a simulated background with white background and different rotation speeds. Requires subjects to complete the reaction does not respond, choose to distinguish and select mental arithmetic tasks, while recording 12-lead EEG data. Results In the various load tasks, the central region had the shortest P1 latency and the highest peak amplitude. Compared with the white background, the reaction latency and P1 latency were shortened under various speed rotation backgrounds. Compared with the white background, the selection interval was completed under different rotation backgrounds And select the mental arithmetic task P1 peak amplitude increase. CONCLUSIONS The background of the star-space rotation at different velocities accelerates the perception of visual cognition and increases the priming effect under high-load tasks. The different angular velocities in the rotation of the star mainly affect the active suppression of the process of distinguishing reaction.