Comparison of dry and gel based electrodes for p300 brain-computer interfaces.
Comparison of dry and gel based electrodes for p300 brain-computer interfaces.
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DOI：
10.3389/fnins.2012.00060
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发表时间：
2012
影响因子：
4.3
通讯作者：
Edlinger G
中科院分区：
文献类型：
--
作者：
Guger C;Krausz G;Allison BZ;Edlinger G
大多数脑机接口（BCI）依赖于脑电图（EEG）中的三种信号之一：P300，稳态视觉诱发电位和事件相关去极化。EEG通常通过使用导电电极凝胶安装在人头皮上的电极进行非侵入性记录，以获得最佳阻抗和数据质量。电极凝胶的使用带来了严重的问题，这些问题在现实世界的环境中尤其明显，当专家不可用时。最近的一些工作已经引入了不需要凝胶的干电极系统，但经常引入新的问题，例如舒适性和信号质量。本研究的主要目的是评估一种新的干电极BCI系统在一个非常常见的任务：拼写与P300 BCI。共有23名受试者使用P300 BCI拼写单词“LUCAS”，同时接收实时闭环反馈。干燥系统产生的分类精度是类似于那些获得凝胶系统。所有受试者在数据记录后完成问卷调查，所有受试者均表示干燥系统没有不适。这是干电极P300 BCI系统的首次现场验证，为EEG记录系统的新研究和开发铺平了道路，EEG记录系统在现场设置中比传统系统更加实用和方便。
Most brain–computer interfaces (BCIs) rely on one of three types of signals in the electroencephalogram (EEG): P300s, steady-state visually evoked potentials, and event-related desynchronization. EEG is typically recorded non-invasively with electrodes mounted on the human scalp using conductive electrode gel for optimal impedance and data quality. The use of electrode gel entails serious problems that are especially pronounced in real-world settings when experts are not available. Some recent work has introduced dry electrode systems that do not require gel, but often introduce new problems such as comfort and signal quality. The principal goal of this study was to assess a new dry electrode BCI system in a very common task: spelling with a P300 BCI. A total of 23 subjects used a P300 BCI to spell the word “LUCAS” while receiving real-time, closed-loop feedback. The dry system yielded classification accuracies that were similar to those obtained with gel systems. All subjects completed a questionnaire after data recording, and all subjects stated that the dry system was not uncomfortable. This is the first field validation of a dry electrode P300 BCI system, and paves the way for new research and development with EEG recording systems that are much more practical and convenient in field settings than conventional systems.
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影响因子：
4
作者：
McFarland DJ;Sarnacki WA;Wolpaw JR
通讯作者：
Wolpaw JR
DOI：
10.1109/tnsre.2010.2076364
发表时间：
2011-02-01
影响因子：
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发表时间：
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影响因子：
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作者：
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通讯作者：
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