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The influence of local cortical oscillations and distributed connectivity networks on multisensory perception

局部皮质振荡和分布式连接网络对多感官知觉的影响

基本信息

批准号：
322153109
负责人：
Professor Dr. Julian Maximilian Felix Keil
金额：
--
依托单位：
Institut für Psychologie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/322153109?language=en
关键词：
influence local cortical oscillations distributed

项目摘要

We permanently monitor and integrate information from our surroundings that reaches us through our sensory systems. A number of empirical findings from recent years provided evidence how cortical activity in one sensory area affects stimulus processing in another sensory cortical area. Moreover, a number of findings suggest an influence of the functional cortical state on upcoming perception. Recent electrophysiological studies have provided evidence that ongoing oscillations and neural connectivity in cortical networks play an important role in the integration and conscious perception of multisensory stimuli. However, only few studies have analyzed neural connectivity and information flow within cortical networks in the context of multisensory stimulus processing. Moreover, there are only few studies, which have specifically influenced local cortical activity and neural connectivity by cognitive processes. Now, the main objective of the current proposal is to investigate how ongoing oscillations, neural connectivity and the information flow within cortical networks influences the integration and perception of upcoming multisensory stimuli. A particular focus is set on the influence of attention and expectations on cortical processes and conscious perception. Therefore, the current project is aimed at two complementary research questions: 1) What is the role of ongoing oscillations and information flow within cortical networks for the processing and perception of upcoming multisensory stimuli? And 2) In which way influence cognitive processes such as attention and expectations this processing? These questions will be addressed in a number of human experiments, in which experimental audiovisual illusion paradigms will be used. The proposed experiments comprise electroencephalography and electrocorticography in combination with state-of-the-art source analysis approaches. The results of the current project will extend our understanding of how ongoing oscillations in cortical networks influence the perception and integration of sensory stimuli across different sensory modalities and on which level cognitive processes play a role therein.

我们不断地监控和整合来自周围环境的信息，这些信息通过我们的感官系统到达我们。近年来的一些经验发现提供了一个感觉区域的皮层活动如何影响另一个感觉皮质区域的刺激处理的证据。此外，许多研究结果表明，功能性皮层状态对即将到来的感知有影响。最近的电生理学研究提供了证据，表明皮层网络中的持续振荡和神经连通性在多感觉刺激的整合和有意识感知中起着重要作用。然而，在多感觉刺激处理的背景下，只有很少的研究分析了皮层网络中的神经连通性和信息流。此外，通过认知过程特异性影响局部皮层活动和神经连通性的研究也很少。现在，当前提案的主要目的是研究正在进行的振荡，神经连通性和皮层网络内的信息流如何影响即将到来的多感官刺激的整合和感知。特别侧重于注意和期望对皮层过程和意识知觉的影响。因此，目前的项目旨在解决两个互补的研究问题：1)皮层网络中正在进行的振荡和信息流在处理和感知即将到来的多感官刺激中的作用是什么？2)这种加工过程是如何影响注意力和期望等认知过程的？这些问题将在一些人类实验中得到解决，在这些实验中，视听错觉范例将被使用。提出的实验包括脑电图和皮质电图结合最先进的源分析方法。当前项目的结果将扩展我们对皮层网络中持续振荡如何影响不同感觉模式的感觉刺激的感知和整合以及认知过程在其中发挥作用的水平的理解。