High-density EEG system for auditory cognitive neuroscience

用于听觉认知神经科学的高密度脑电图系统

• 批准号: 472600-2015
• 负责人: Palmer, Caroline
• 金额: $ 7.16万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=564788
• 关键词: density; EEG; system; auditory; cognitive

The capacity for humans to adapt their behaviour to incoming sensory information is extraordinary. Adaptation during auditory-motor behaviours such as speaking, playing a musical instrument, or clapping to a beat is fast and effortless. Audience members, for example, who begin to clap are often unsynchronized (out-of-phase) but quickly align with each other, forming an in-phase, coherent pattern. This phase coherence characterizes our ability to adapt to the wide range of acoustic changes that characterize music and speech. Brain activity during coordination tasks demonstrates phase coherence as well, as neural networks form synchronous oscillatory patterns over time. Unfortunately, current scientific theory is based almost exclusively on brain-behaviour measurements from (single) individuals, often in response to computer-generated (non-adaptive) stimuli. This limitation has two negative outcomes: a) we have neglected to study temporal adaptation that is specific to human interactions; and b) we lack the data with which to adequately test phase-coherence models of brain-behaviour interactions between individuals.

人类能够使自己的行为适应传入的感官信息，这种能力是非凡的。在说话、演奏乐器或随着节拍鼓掌等运动行为中，适应是快速而不费力的。例如，开始鼓掌的观众通常是不同步的（异相），但很快就彼此对齐，形成同相的连贯模式。这种相位相干性表征了我们适应音乐和言语所特有的广泛声学变化的能力。协调任务期间的大脑活动也表现出相位一致性，因为神经网络随着时间的推移形成同步振荡模式。 不幸的是，目前的科学理论几乎完全基于（单个）个体的大脑行为测量，通常是对计算机生成的（非适应性）刺激的反应。这种限制有两个负面结果：a）我们忽略了对人类互动特有的时间适应的研究; B）我们缺乏足够的数据来测试个体之间大脑行为互动的相位相干模型。