arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.15500cs.CL
收藏

从自然句子阅读中提取事件相关的人脑动力学

Retrieving Event-related Human Brain Dynamics from Natural Sentence Reading

University of Tasmania(塔斯马尼亚大学)

Xinping Liu, Zehong Cao

摘要:

在神经科学和心理语言学中,人们在阅读自然语言时记录的脑电信号通常被用作解释人类语言理解的认知方法。以往的研究表明,人在阅读过程中的注视和激活与大脑的某些区域有关,但何时以及如何跨时域和频域测量大脑动力学尚不清楚。在这项研究中,我们提出了第一个分析的事件相关脑电位(ERP),和事件相关的频谱扰动(ERSP)的基准数据集,其中包括同步EEG和相关的眼动跟踪记录从人类自然阅读实验任务。我们的研究结果表明,在刺激后(开始阅读每个句子)在枕区的162 ms左右诱发的峰值,表明大脑检索词汇和语义视觉信息处理接近200 ms从句子开始。枕叶200 ms左右的ERP在短反应时和长反应时分别呈现负功率和正功率。此外,相对于基线,200 ms左右的枕叶ERSP显示高伽马功率增加,低β和低伽马功率降低。我们的研究结果表明,大多数语义感知反应发生在200毫秒左右的α,β和γ频段的EEG信号。我们的研究结果也提供了潜在的影响,促进认知自然语言处理模型的评估从脑电动力学。

英文摘要:

Electroencephalography (EEG) signals recordings when people reading natural languages are commonly used as a cognitive method to interpret human language understanding in neuroscience and psycholinguistics. Previous studies have demonstrated that the human fixation and activation in word reading associated with some brain regions, but it is not clear when and how to measure the brain dynamics across time and frequency domains. In this study, we propose the first analysis of event-related brain potentials (ERPs), and event-related spectral perturbations (ERSPs) on benchmark datasets which consist of sentence-level simultaneous EEG and related eye-tracking recorded from human natural reading experiment tasks. Our results showed peaks evoked at around 162 ms after the stimulus (starting to read each sentence) in the occipital area, indicating the brain retriving lexical and semantic visual information processing approaching 200 ms from the sentence onset. Furthermore, the occipital ERP around 200ms presents negative power and positive power in short and long reaction times. In addition, the occipital ERSP around 200ms demonstrated increased high gamma and decreased low beta and low gamma power, relative to the baseline. Our results implied that most of the semantic-perception responses occurred around the 200ms in alpha, beta and gamma bands of EEG signals. Our findings also provide potential impacts on promoting cognitive natural language processing models evaluation from EEG dynamics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑