Performance of the Emotiv Epoc headset for P300-based applications.
Performance of the Emotiv Epoc headset for P300-based applications.
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DOI：
10.1186/1475-925x-12-56
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发表时间：
2013-06-25
影响因子：
3.9
通讯作者：
Dutoit T
中科院分区：
文献类型：
--
作者：
Duvinage M;Castermans T;Petieau M;Hoellinger T;Cheron G;Dutoit T
二十年来，基于EEG的脑机接口（BCI）系统在研究实验室中得到了广泛的研究。现在，研究人员希望考虑实验室外的应用，并使这项技术对每个人都可用。然而，医用级脑电信号记录设备对于最终用户来说仍然太贵，尤其是残疾人。因此，市场上出现了几种低成本的替代品。Epotiv Epoc耳机就是其中之一。尽管之前的一些工作表明该设备可以满足客户的性能需求，但与医疗系统相比，目前还没有基于定量分类的评估。本文旨在通过使用相同的电极在P300 BCI中确定其各自的性能，对医用级系统、ANT设备和Actutiv Epoc耳机进行统计学比较。最重要的是，回顾以往的programmtiv研究和讨论的实际考虑，这两个系统的建议。九名健康受试者参与了该实验，在该实验期间，ANT系统和Actutiv系统在两种不同的条件下使用：坐在椅子上和以恒定速度在跑步机上行走。耳机的性能明显低于医疗器械;观察到的效应大小从中等到大不等。与医疗级竞争对手相比，Actutiv耳机的相对运营和维护成本更高。虽然这种低成本的耳机能够以令人满意的方式记录EEG数据，但它只应选择用于非关键应用，如游戏，通信系统等，对于康复或假肢控制，这种缺乏可靠性可能会导致严重的后果。出于研究目的，应选择医疗系统，除非有大量试验可用或信噪比较高。这也表明，仍然需要为关键应用和研究设计特定的低成本EEG记录系统。
For two decades, EEG-based Brain-Computer Interface (BCI) systems have been widely studied in research labs. Now, researchers want to consider out-of-the-lab applications and make this technology available to everybody. However, medical-grade EEG recording devices are still much too expensive for end-users, especially disabled people. Therefore, several low-cost alternatives have appeared on the market. The Emotiv Epoc headset is one of them. Although some previous work showed this device could suit the customer’s needs in terms of performance, no quantitative classification-based assessments compared to a medical system are available. This paper aims at statistically comparing a medical-grade system, the ANT device, and the Emotiv Epoc headset by determining their respective performances in a P300 BCI using the same electrodes. On top of that, a review of previous Emotiv studies and a discussion on practical considerations regarding both systems are proposed. Nine healthy subjects participated in this experiment during which the ANT and the Emotiv systems are used in two different conditions: sitting on a chair and walking on a treadmill at constant speed. The Emotiv headset performs significantly worse than the medical device; observed effect sizes vary from medium to large. The Emotiv headset has higher relative operational and maintenance costs than its medical-grade competitor. Although this low-cost headset is able to record EEG data in a satisfying manner, it should only be chosen for non critical applications such as games, communication systems, etc. For rehabilitation or prosthesis control, this lack of reliability may lead to serious consequences. For research purposes, the medical system should be chosen except if a lot of trials are available or when the Signal-to-Noise Ratio is high. This also suggests that the design of a specific low-cost EEG recording system for critical applications and research is still required.