阻断对视运动启动方向知觉影响的行为学研究  

Effects of blank interruption on visual priming motion perception

作　　者：罗艳琳[1] 罗跃嘉[2] 吴宗耀[1] 

机构地区：[1]第三军医大学第一附属医院康复科,重庆4000382 [2]中国科学院心理研究所心理健康重点实验室

出　　处：《中国康复医学杂志》2003年第10期590-592,共3页Chinese Journal of Rehabilitation Medicine

基　　金：国家自然科学基金资助项目(30070262);中国科学院重要方向项目(KSCX2-SW-221)

摘　　要：目的:记录正常青年人在对视运动启动知觉实验中方向判断的反应时与准确率。方法:24名被试者参与本实验。实验一在单步骤运动的两图片中加入空白阻断;实验二在启动运动的两个步骤中加入空白阻断。结果:发现由某一特定方向的视觉运动引导一个方向二义的运动,二义的运动方向知觉受前者启动,偏向前者同一个方向。当两个步骤之间加入一个空白的阻断时,其运动方向启动效应会呈现如下变化:短时间隔时二义运动受特定方向的启动效应明显;时间间隔延长时,启动性减弱或消失;当时间间隔进一步延长时,出现相反方向的启动效应。结论:该结果间接地提供了运动知觉启动效应为神经元细胞在空间与时间上整合观点的证据,支持基于计算模型的运动知觉方向加工的神经机制。Objective: To investigate the priming motion perception of young man by recording the reaction time and correct percent.Method:24 healthy subjects took part in this experiment. Experiment 1:insert a blank interruption between two flames of one step motion. Experiment 2: insert the blank interruption between two steps of priming motion.Result: If an ambiguous motion followed a special motion, the direction of the ambiguous motion moved the same direction as the first one. A blank interruption lasting 75ms inserted between two steps motion. The direction of the ambiguous motion changed as follow:the positive priming effects was obviously for the shorter interval between priming and target; if the interval of priming-target was long; the positive priming effects was decreased or disappeared; as the interval between priming and target was short; If the interval of priming-target was longer enough, a negative priming effects was observedobviously. Conclusion: The motion priming perception is consistent with neuron signal integration of temporal and spatial in the human brain, and supports the motion opponency theory. Author′s address The Plastic Surgery && Rehabilitation Center of Southwest Hospital, The Third Military Medical University. Chongqing,400038

关 键 词：阻断 行为学 知觉 视觉运动 启动效应 神经元细胞 

分 类 号：R338[医药卫生—人体生理学]