中国科学院心理研究所机构知识库

采用RSVP范式验证了两个序列呈现的刺激可以被并行加工的假设。实验一发现 :在两个目标刺激(Target和Probe,以下简称T和P)间无干扰刺激时 ,T的反应时随着T、P之间的间隔显著减小 ,其模式符合并行加工模型的预测。而实验二发现 :当T和P之间有干扰刺激 (即T后呈现后续掩蔽 )时 ,T的反应时并不随着T、P的间隔而减小 ,其模式符合序列加工模型的预测。由此可推论 ,只要两个序列呈现的刺激之间没有干扰刺激 ,可以对他们进行并行的注意加工 ,但是会受到两个刺激之间的时间间隔的影响

Whether serially presented stimuli can be processed simultaneously or sequentially are tested by adopting a simplified AB paradigm. It was found that , when two stimuli (Target and Probe , T & P for short respectively) were serially presented without distracter between them , their pattern of RT matched the prediction of the Parallel Model exactly (Experiment 1) . However , when T was immediately followed by a backward mask (in other words , T & P were interrupted by a distracter) , T & P′s pattern of RT accorded with the Serial Model ( Experiment 2) . These patterns of results indicated that serially presented stimuli which have no distracter between them can be processed simultaneously. And this kind of parallel mechanism may be extremely capacity2limited and possibly deals with only two objects simultaneously. Moreover , it can be interrupted by long interval between two targets.