Neural dynamics of distraction under competition in visual cortex

视觉皮层竞争下分心的神经动力学

• 批准号: 495392039
• 负责人: Professor Dr. Matthias M. Müller
• 金额: --
• 依托单位: Wilhelm-Wundt-Institut für Psychologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/495392039?language=en
• 关键词: Neural; dynamics; distraction; under; competition

In our previous research in neural dynamics of competitive interactions for attentional processing resources in early visual cortex we observed bi-phasic neural process of early facilitation of the attended stimulus, followed by inhibition/suppression of the then to-be-ignores one, demonstrating that shifting of attentional resources is NOT a time invariant process. The major aim of the project is to systematically investigate the neural dynamics of the observed bi-phasic process of “distraction under competition” in combination with a computational model (DUC-model). Our model integrates two of the currently most prominent frameworks in the cognitive neurosciences (i.e. sensory gain and biased competition) that have traditionally been investigated in isolation, to an integrative framework by including the important factor of time. We will use one standard design (except the last experiment) allowing for maximal comparison of results and to manipulate the two processes. To this end, we intend to manipulate either the background stream of images or difficulty of the foreground task. The last experiment introduces direct competition between emotional stimuli with a multi-modal analysis technique to further elucidate neural dynamics of these competitive interactions. To us, such an integrative framework is a significant and innovative step towards advancing our understanding of neural dynamics of distraction under competition that most certainly will not only help to understand attention/emotion competition and interaction as will be investigated with the current suggestions, but also might provide a new framework for research in other fields, such as visual search.

在我们以前的早期视皮层注意加工资源竞争性相互作用的神经动力学研究中，我们观察到了注意刺激的早期易化和随后的待忽略刺激的抑制/抑制的双相神经过程，这表明注意资源的转移不是一个时不变的过程。该项目的主要目的是结合计算模型（DUC模型）系统地研究所观察到的“竞争下的分心”的双相过程的神经动力学。我们的模型集成了两个目前最突出的框架，在认知神经科学（即感官增益和偏见的竞争），传统上被孤立地研究，到一个综合的框架，包括时间的重要因素。我们将使用一个标准设计（除了最后一个实验），允许最大限度地比较结果并操纵两个过程。为此，我们打算操纵背景图像流或前景任务的难度。最后一个实验引入了多模态分析技术，以进一步阐明这些竞争性相互作用的神经动力学之间的情绪刺激的直接竞争。对我们来说，这样一个整合的框架是一个重要的和创新的一步，以推进我们对竞争下分心的神经动力学的理解，这肯定不仅有助于理解注意力/情绪的竞争和互动，将与目前的建议进行调查，但也可能提供一个新的框架，在其他领域的研究，如视觉搜索。