Dutta A, Nairne J S
Purdue University, West Lafayette, Indiana.
Mem Cognit. 1993 Jul;21(4):440-8. doi: 10.3758/bf03197175.
The speeded-classification paradigm, adapted from the study of perceptual interactions, was used to examine interactions among features of the short-term memory trace. In each of four experiments, a trial began with the presentation of a pair of stimuli, each member of which occurred either first or second in time and above or below a fixation point. One of the two stimuli was then presented again, and the task was to classify its prior temporal (Experiments 1 and 3) or spatial (Experiments 2 and 4) position. The main question of interest asked whether subjects could selectively attend to one of these occurrence dimensions while ignoring irrelevant variation along the other. The results suggested that whereas subjects can selectively ignore temporal or spatial variation when no recall of the irrelevant dimensions value is required, they suffer interference when values on both dimensions must be remembered. The obtained patterns of interference are consistent with postperceptual interactions of the spatial and temporal components of the memory trace.
快速分类范式改编自知觉交互作用的研究，用于检验短期记忆痕迹特征之间的交互作用。在四个实验中的每一个实验里，一次试验开始时会呈现一对刺激，每个刺激在时间上要么先出现要么后出现，在固定点之上或之下。然后再次呈现这两个刺激中的一个，任务是对其先前的时间（实验1和3）或空间（实验2和4）位置进行分类。主要关注的问题是，受试者是否能够在忽略另一个维度上无关变化的同时，选择性地关注这些出现维度中的一个。结果表明，当不需要回忆无关维度的值时，受试者可以选择性地忽略时间或空间变化，但当两个维度的值都必须被记住时，他们会受到干扰。所获得的干扰模式与记忆痕迹的空间和时间成分的知觉后交互作用一致。
