Effects of unconscious stimuli on endogenous shifts of spatial attention

无意识刺激对空间注意力内源性转移的影响

• 批准号: 60168120
• 负责人: Professor Dr. Uwe F. Mattler
• 金额: --
• 依托单位: Abteilung für Experimentelle Psychologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/60168120?language=en
• 关键词: Effects; unconscious; stimuli; endogenous; shifts

To what extend is the direction of spatial visual attention modulated by unconscious visual stimuli? Previous research has shown that visual prime stimuli can affect behavior even when primes are made invisible by masking. When participants shift their attention in response to a cue either to auditory or visual target stimuli, the classification of these target stimuli is facilitated if a previously presented prime indicated the same (congruent trials) rather than the alternative target modality (incongruent trials). This project aims to examine whether spatial cueing is modulated by masked primes in the same way as non-spatial cueing. Moreover, the locus of these priming effects {perception, decision, internal/external responses) is examined by signal detection analyses and electrophysiological measures. If the prime is followed by a separate mask processing can be facilitated by incongruent rather than congruent primes ("inverse priming effects" or "negative compatibility effects"). A corresponding set of experiments aims to examine inverse priming in a spatial cueing paradigm. If spatial and non-spatial cue priming effects result from a common basic principle, both should follow the same laws. If this principle consists in the ability of unconscious visual stimuli to initiate internal responses, spatial cue priming effects should be located in the modulation of early target processing. In this case, a modified version of the accumulator model could account for this broad class of priming effects.

无意识视觉刺激在多大程度上调节空间视觉注意力的方向？先前的研究表明，即使通过掩蔽使视觉素刺激变得不可见，视觉素刺激也会影响行为。当参与者将注意力转移到听觉或视觉目标刺激的提示时，如果先前呈现的素数指示相同（一致试验）而不是替代目标模式（不一致试验），则有助于对这些目标刺激进行分类。该项目旨在检查空间提示是否以与非空间提示相同的方式由掩蔽素数调制。此外，通过信号检测分析和电生理学测量来检查这些启动效应（感知、决策、内部/外部反应）的轨迹。如果素数之后是单独的掩模，则可以通过不一致而不是全等的素数来促进处理（“反向启动效应”或“负相容性效应”）。一组相应的实验旨在检查空间提示范式中的反向启动。如果空间和非空间线索启动效应是由共同的基本原理产生的，那么两者都应该遵循相同的规律。如果这一原理在于无意识视觉刺激启动内部反应的能力，那么空间线索启动效应应该位于早期目标处理的调节中。在这种情况下，累加器模型的修改版本可以解释这一广泛的启动效应。