用脑磁图测量枕α节律和颞tau节律

IF 0.2 Q4 PHYSICS, APPLIED

Progress in Superconductivity and Cryogenics Pub Date : 2015-12-31 DOI:10.9714/PSAC.2015.17.4.034

Jieun Kim, Bakul Gohel, Kiwoong Kim, Hyukchan Kwon, Kyung-min An

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引用次数: 0

摘要

基于超导量子干涉器件(SQUID)的脑磁图(MEG)技术的发展，为非侵入性、高时间和高空间分辨率地观察人脑功能提供了便利。通过脑磁图，我们研究了人类大脑中最主要的自发节律之一——α节律(8-13 Hz)。在大脑的几个感觉区域观察到8-13赫兹的节奏。在枕部视觉相关区域，我们称其为α节奏，颞部听觉相关区域称其为tau节奏，顶部感觉运动相关区域称其为mu节奏。这些节律在任务相关区域减弱，在任务无关区域增强。这意味着这些节律在任务无关区域的抑制中起着关键作用。把注意力集中在任务上可能会有帮助。在一些关于多感觉模态实验中α带抑制的文献中，他们在枕区和体感觉区观察到这种效应。在这项研究中，我们假设我们也可以在听觉皮层中观察到由tau节律介导的α带抑制。在此之前，我们首先在枕区和颞区分别研究了α和tau节律的存在。为了观察这些节律，我们分别在任务相关区域抑制视觉和听觉刺激。

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Measurement of the occipital alpha rhythm and temporal tau rhythm by using magnetoencephalography

Developing Magnetoencephalography (MEG) based on Superconducting Quantum Interference Device (SQUID) facilitates to observe the human brain functions in non-invasively and high temporal and high spatial resolution. By using this MEG, we studied alpha rhythm (8-13 Hz) that is one of the most predominant spontaneous rhythm in human brain. The 8–13 Hz rhythm is observed in several sensory region in the brain. In visual related region of occipital, we call to alpha rhythm, and auditory related region of temporal call to tau rhythm, sensorimotor related region of parietal call to mu rhythm. These rhythms are decreased in task related region and increased in task irrelevant regions. This means that these rhythms play a pivotal role of inhibition in task irrelevant region. It may be helpful to attention to the task. In several literature about the alpha-band inhibition in multi-sensory modality experiment, they observed this effect in the occipital and somatosensory region. In this study, we hypothesized that we can also observe the alpha-band inhibition in the auditory cortex, mediated by the tau rhythm. Before that, we first investigated the existence of the alpha and tau rhythm in occipital and temporal region, respectively. To see these rhythms, we applied the visual and auditory stimulation, in turns, suppressed in task relevant regions, respectively.

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来源期刊

Progress in Superconductivity and Cryogenics PHYSICS, APPLIED-

CiteScore

0.40

自引率

33.30%

发文量

期刊介绍： Progress in Superconductivity and Cryogenics is the official publication of The Korea Institute of Applied Superconductivity and Cryogenics and the Korean Superconductivity Society. It was launched in 1999, and accepts original research articles and review papers on research on superconductivity and related fields of physics, electronic devices, materials science, large-scale applications for magnets, power and energy, and cryogenics. The Journal is published quarterly in March, June, September, and December each year. Supplemental issues are published occasionally. The official title of the journal is ''Progress in Superconductivity and Cryogenics'' and the abbreviated title is ''Prog. Supercond. Cryog.'' All submitted manuscripts are peer-reviewed by two reviewers. The text must be written in English. All the articles in this journal are KCI and SCOPUS as of 2015. The URL address of the journal is http://psac.kisac.org where full text is available. This work was supported by the Korean Federation of Science and Technology Societies grant funded by the Korea government.