Combined mapping of human auditory EEG and MEG responses

Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section Pub Date : 1998-07-01 DOI:10.1016/S0168-5597(98)00017-3

Minna Huotilainen , István Winkler , Kimmo Alho , Carles Escera , Juha Virtanen , Risto J Ilmoniemi , Iiro P Jääskeläinen , Eero Pekkonen , Risto Näätänen

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引用次数: 160

Abstract

Auditory electric and magnetic P50(m), N1(m) and MMN(m) responses to standard, deviant and novel sounds were studied by recording brain electrical activity with 25 EEG electrodes simultaneously with the corresponding magnetic signals measured with 122 MEG gradiometer coils. The sources of these responses were located on the basis of the MEG responses; all were found to be in the supratemporal plane. The goal of the present paper was to investigate to what degree the source locations and orientations determined from the magnetic data account for the measured EEG signals. It was found that the electric P50, N1 and MMN responses can to a considerable degree be explained by the sources of the corresponding magnetic responses. In addition, source-current components not detectable by MEG were shown to contribute to the measured EEG signals.

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人听觉脑电与脑磁图反应的联合映射

通过记录25个脑电电极的脑电活动，同时用122个脑磁梯度仪线圈测量相应的磁信号，研究了听觉电、磁P50(m)、N1(m)和MMN(m)对标准、异常和新颖声音的响应。这些反应的来源是在脑磁图反应的基础上确定的;所有的都在颞上平面。本文的目的是研究从磁数据中确定的源位置和方向在多大程度上解释了测量的脑电图信号。发现P50、N1和MMN的电响应在相当程度上可以用相应的磁响应源来解释。此外，无法被MEG检测到的源电流分量被证明有助于测量到的脑电图信号。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section

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