Pomplun M, Reingold E M, Shen J
Department of Psychology, University of Toronto, 100 St. George Street, Ont., M5S 3G3, Toronto, Canada.
Vision Res. 2001 Sep;41(21):2757-69. doi: 10.1016/s0042-6989(01)00145-6.
The present study employed the gaze-contingent window paradigm to investigate parafoveal and peripheral cueing and masking effects on saccadic selectivity in a triple-conjunction visual search task. In the cueing conditions, the information shown outside the gaze-contingent window was restricted to the feature or feature pair shared between the target and a particular distractor type. In the masking conditions, no stimulus features were shown outside the window. Significant cueing and masking effects on saccadic selectivity were observed for saccades directed at items within the window, where all features were visible across experimental conditions. Cueing a particular feature or feature pair biased saccadic selectivity towards this feature or feature pair, while masking generally reduced saccadic selectivity. These findings support the concept of visual guidance being a preattentive process that operates in parallel across the display.
本研究采用注视点视窗范式，在三联视觉搜索任务中，研究副中央凹和外周线索化及掩蔽对扫视选择性的影响。在线索化条件下，注视点视窗外显示的信息被限制为目标与特定干扰项类型之间共享的特征或特征对。在掩蔽条件下，视窗外不显示任何刺激特征。对于指向视窗内项目的扫视，观察到对扫视选择性有显著的线索化和掩蔽效应，在所有实验条件下，视窗内的所有特征都是可见的。线索化特定特征或特征对会使扫视选择性偏向该特征或特征对，而掩蔽通常会降低扫视选择性。这些发现支持视觉引导是一个在整个显示屏上并行运作的前注意过程这一概念。
