Integration and Interruption in the Masking of Form by Form
Integration and Interruption in the Masking of Form by Form
复制标题
形式掩饰中的整合与中断
作者：
T. Bachmann;J. Allik
给出了两对等面积的几何图形，一个接一个，刺激间隔t从0到250ms不等。在实验1中，受试者的任务是识别这两种刺激。在所有t值中最先呈现的形式的识别(向后掩蔽)是非单调性质的，在t值为30到60ms时损伤最大。对第二种形式的识别(前向掩蔽)随着t的增加而单调增加。不同的形式被识别，在发生掩蔽的所有t值上具有不同的有效性。实验结果基于多阶段加工模型进行解释，该模型假设不同水平的刺激在不同的t值下相互作用。在实验2中，受试者的任务是检测预先指定的形式的存在或不存在。在这种情况下，后向掩蔽和前向掩蔽都会产生单调函数。从注意依赖掩蔽的角度对此进行了解释。
Pairs of geometric forms of equal area were presented, one form after another, with interstimulus intervals t ranging from 0 to 250 ms. The subject's task in experiment 1 was to recognise both stimuli. Identification of the form presented first (backward masking) across all values of t was of a nonmonotonic nature, with greatest impairment at values of t from 30 to 60 ms. Identification of the second form presented (forward masking) increased monotonically with increasing t. Different forms were recognised with different effectiveness across all values of t where masking took place. The results are interpreted on the basis of a multiple-stage processing model which assumes interaction between stimuli at different levels at different values of t. In experiment 2 the subject's task was to detect the presence or absence of a predesignated form. This condition yielded monotonic functions for both backward and forward masking. An explanation in terms of attention-dependent masking is given.