不同旋转速度背景及认知负荷对视认知早期加工的影响

发布时间：2018-05-21 11:23

本文选题：事件相关电位 + N　；参考：《航天医学与医学工程》2017年04期

【摘要】：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。
[Abstract]:Objective to study the changes of early processing of visual cognition in the process of completing visual cognitive tasks with different rotation speed. Methods A total of 20 healthy right-handed college students were enrolled in this study. The visual background was divided into white background and simulated star-sky background with different rotational speeds. Subjects were asked to complete nonresponse, select tasks to distinguish and select mental arithmetic, and record 12-conduction EEG data at the same time. Results the latency of P1 was the shortest and the amplitude of peak wave was the highest in the central area of various load tasks; compared with the white background, the reaction time and P1 latency were shortened in the background of various speed rotation, and compared with the white background, The peak amplitude of P1 in the task of selection, differentiation and selection of mental arithmetic was increased under different rotation background. Conclusion the background of star rotation at different speeds accelerates the perception of visual cognition and increases the priming effect under high load tasks. Different angular velocities of star rotation mainly affect the processing process of active suppression of differential response.
【作者单位】：中国航天员科研训练中心航天医学基础与应用国家重点实验室;
【基金】：全军后勤科研重点项目(BWS14J024) 国家自然科学基金项目(81571845)
【分类号】：R852

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