基于双眼视差探讨深度知觉信息对背景线索效应的影响

背景线索效应是由重复场景导致搜索效率提高的现象。以往研究发现三维场景下能获得背景线索效应,但对三维场景下深度知觉线索信息如何影响空间场景提供有效线索引导注意仍缺乏实证研究。本研究以矩阵刺激为材料,通过设置不同的刺激项目水平数探讨深度知觉线索对背景线索效应的影响模式。结果发现:(1)在场景布局由较少项目构成时,深度知觉线索提供目标与刺激项目的有效联结,获得背景线索效应;(2)当刺激项目水平达到一定程度时,深度知觉线索增加了背景线索任务的搜索难度,干扰了重复场景中的背景信息对注意的指导性加工,背景线索效应消失。研究结果为三维场景下深度信息对空间场景中注意引导加工的影响提供了证据。

Modulation of Depth Perception on Contextual Cueing Effect Based on Binocular Disparity

The contextual cueing effect refers that repeated configurations lead to more efficient search performance.Previous studies explored the contextual cueing effect with arrays by two-dimensional displays to explain how contextual information is learnt and guide the deployment of attention.How depth information affects spatial context to guide attention in three-dimensional configurations still falls a lack of empirical evidence.The present study investigated how depth perception information affects contextual cueing effect by manipulating the set sizes of stimuli on binocular disparities.The results showed that:1)in the 3-D spatial structure context,the depth information provided effective covariations between the target and stimuli and obtained contextual cueing effect;2)when the set size reached a certain level,depth perception could no longer provide effective information to guide attention and interfered to obtain the contextual cueing effect.