發(fā)布時間：2018-05-21 11:23

  本文選題：事件相關電位 + N��； 參考：《航天醫(yī)學與醫(yī)學工程》2017年04期

【摘要】：目的研究不同轉速旋轉背景條件下,完成不同認知負荷視覺認知任務過程中的視認知早期加工的變化。方法受試者為20名健康右利手大學生,視覺背景分為白色背景與不同轉速的模擬星空背景。要求受試者完成不反應、選擇區(qū)分和選擇心算任務,同時記錄12導腦電數據。結果各種負荷任務中中央區(qū)的P1潛伏期最短,峰值波幅最高;與白色背景相比,各種速度旋轉背景下,反應時及P1潛伏期縮短;與白色背景相比,不同旋轉背景下完成選擇區(qū)分及選擇心算任務的P1峰值波幅升高。結論不同速度星空旋轉背景加速了視覺認知的感知,在高負荷任務下增加啟動效應。星空旋轉不同角速度主要對區(qū)分反應的主動抑制加工過程產生影響。
[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.
【作者單位】： 中國航天員科研訓練中心航天醫(yī)學基礎與應用國家重點實驗室;
【基金】：全軍后勤科研重點項目(BWS14J024) 國家自然科學基金項目(81571845)
【分類號】：R852

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