论文部分内容阅读
目的研究自身旋转与视觉背景旋转对视认知早期加工的协同影响。方法受试者为14名大学生。转椅10°/s旋转,利用模拟星空模式作为背景。背景旋转速度为30°/s,45°/s和60°/s,黑色背景作为对照。在自身和背景旋转同时作用下,受试者完成不反应、方位区分和方位区分心算3种任务。记录12导脑电。结果 1)3种认知任务中,45°/s旋转背景下后脑区P1,N1潜伏期显著缩短;2)多种情况下旋转背景P1,N1潜伏期长于黑色背景;3)方位区分、心算任务中随着背景转速的提高,前脑区N1波幅逐渐降低而后脑区N1波幅逐渐增高。结论 1)自身旋转与视觉背景旋转速度间所存在的交互作用在一定情况下共同促进视认知早期加工;2)匀速旋转过程中,视觉背景旋转加快视觉刺激感知的效应受到抑制;3)随着视景转速的提高,前额叶抗干扰能力减弱。
Objective To study the synergistic effect of self-rotation and visual background rotation on early visual processing. Methods The subjects were 14 college students. Swivel chair 10 ° / s rotation, the use of simulated Starry Sky mode as the background. Background rotation speed of 30 ° / s, 45 ° / s and 60 ° / s, black background as a control. In the meantime, under the action of self-rotation and background rotation, the subjects did not respond to the three tasks of discerning azimuth and azimuth. Record 12-lead EEG. Results 1) Among the three cognitive tasks, the incubation period of P1 and N1 in the posterior cerebral cortex was significantly shortened under 45 ° / s rotation; 2) the latency of P1 and N1 in the rotated background was longer than that of the black background in many cases; 3) With the increase of background rotational velocity, the amplitude of N1 in the forebrain decreased gradually and the amplitude of N1 in the posterior brain increased gradually. Conclusions 1) The interaction between self-rotation and visual background rotation speed can promote early visual processing under certain circumstances; 2) The effect of visual background rotation to accelerate visual perception of perception is inhibited during constant rotation; 3) The vision speed increase, prefrontal anti-interference ability weakened.