【摘要】 对扫视模式的研究有助于了解人类信息加工过程。本研究利用眼动测量技术记录了视觉搜索中的眼动过程,以了解目标概率对目标觉察中扫视模式的影响。实验结果表明不同的目标概率会引起平均注视时间长短的变化;注视点分布不但与目标概率有关,而且受被试所用的扫视策略影响;时间序列分析结果表明以前数个注视点的位置对下一个注视点位置的影响可用低阶的 AR 或 ARMA 过程来表示。频谱分析结果表明在目标概率不同时被试会使用不同的扫视模式,扫视模式在 X 方向和 Y 方向也不相同。研究表明时间序列分析是一种分析扫视模式的较好方法。更多还原

【Abstract】 The analysis of visual scanning pattern is an important way to understand human in-formation processing.Eye movement data were collected to examine the effects of targetprobability on visual scaning pattern.The experiment shows that the target probability af-fects the mean duration of fixations;It is also showed that the distribution of fixations isdependent on target probability and determined by subjects’ visual scanning strategy;Timeseries analysis showes that the influnece of previous fixations on next ones could be simu-lated with low order AR or ARMA process.Different visual scanning under dif-ferent target probabilities are indentified using spectrum analysis.And it is found that thescanning patterns in X and Y direction are different.The study demostrates that time scriesanalysis is a good way to describe visual scanning patterns.更多还原