在不同注意力模式下感知动态的多扬声器听觉场景
Stephanie Graceffo1, David F Little1, Emine Merve Kaya1
1Laboratory for Computational Audio Perception, Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, USA.
NeuroImage
|February 6, 2026
概括
听觉注意力不是单一的;基于对象的注意力是优先考虑声音最有效的. 不同的注意力模式涉及不同的神经过程,受到自愿焦点和环境线索的影响.
科学领域:
- 认知神经科学 认知神经科学
- 听觉感知是一种听觉感知.
- 注意力的神经科学注意力的神经科学
背景情况:
- 注意力对于处理复杂的听觉场景至关重要.
- 听觉注意力可以是自下而上 (以刺激为驱动) 或自上而下 (以目标为导向).
- 不同的注意模式的相互作用和神经基础仍然不清楚.
研究的目的:
- 研究不同听觉注意力模式的感知和神经相关性.
- 比较基于特征的,基于对象的和全局的注意力.
- 检查自上而下的注意力和自下而上的突出性之间的相互作用.
主要方法:
- 使用了"尾酒派对"范式,并检测了音调偏差.
- 在空间 (基于特征),扬声器 (基于对象) 和全局注意力任务中比较听者的表现和EEG数据.
- 从EEG信号中分析了刺激包的神经解码.
主要成果:
- 基于对象的注意力与基于特征或全局的注意力相比,产生了更高的感知性能.
- 基于对象和空间的注意力显示出不同的神经机制和由自下而上的差异调制.
- 下向突出对于最初的听觉对象分离至关重要,但对于持续的注意力来说却不那么重要.
- 全球注意力模式在EEG解码中展示了一个独特的源采样方案,在对象/空间模式中缺席.
结论:
- 对同一场景的听觉感知因注意力集中和任务要求而有所不同.
- 从上到下的注意力控制与自下而上的突出相互作用,塑造听觉处理.
- 独特的神经机制支持不同模式的听觉注意力,强调注意力的多面性质.
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