Impact of auditory distraction on user performance in a brain-computer interface driven by different mental tasks
Impact of auditory distraction on user performance in a brain-computer interface driven by different mental tasks
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DOI：
10.1016/j.clinph.2011.03.019
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发表时间：
2011-10-01
影响因子：
4.7
通讯作者：
Neuper, Christa
中科院分区：
文献类型：
--
作者：
Friedrich, Elisabeth V. C.;Scherer, Reinhold;Neuper, Christa
目的：基于心理意象的脑机接口（BCI）协议大多允许用户在没有外部干扰的情况下专注于任务。然而，环境刺激可能会妨碍用户产生适当的大脑活动模式的能力。本研究的目的是调查用户是否能够保持满意的BCI控制在听觉distraction，以及是否不同的心理任务受到影响不同的听觉distraction.Methods：12名参与者控制了4类脑机接口的心理任务词联想，心理减法，空间导航和运动想象的调制脑电频段在10个会话。在执行意象任务的同时，用户必须忽略根据古怪范式呈现的所有音调（被动分散注意力），或者对目标音调做出反应（主动分散注意力）。结果：与主动分散注意力和无注意力相比，被动分散注意力会导致用户表现提高。运动想象和其他三个心理任务的性能之间的差异反映在P300的振幅，潜伏期和反应时，从而可能表明workload.Conclusion：听觉分心没有不良影响的BCI性能的检查mental task.Significance：我们的研究结果是令人鼓舞的现实世界中的应用程序作为参与者成功地在听觉分心期间操作的4类BCI。(C)2011年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: Mental imagery-based brain-computer interface (BCI)-protocols mostly allow users to focus on the task without external interferences. Environmental stimuli, however, may hamper users' ability to generate proper brain activity patterns. The aim of this study was to investigate whether users are able to retain satisfactory BCI control during auditory distraction, and whether distinct mental tasks are affected differently from auditory distraction.Methods: Twelve participants controlled a 4-class BCI with the mental tasks word association, mental subtraction, spatial navigation and motor imagery by modulation of EEG frequency bands in 10 sessions. Simultaneously to the imagery task, users had to either ignore all tones (passive distraction) that were presented according to an oddball paradigm or react upon the target tone (active distraction).Results: Passive distraction led to an increased user performance compared to active distraction and no distraction condition. Differences between motor imagery and the other three mental tasks in performance were reflected in the P300 amplitude, latency and reaction time and thus might indicate differences in workload.Conclusion: Auditory distraction had no adverse effect on the BCI performance of the examined mental task.Significance: Our results are encouraging for real-world application as participants succeeded in operating the 4-class BCI during auditory distraction. (C) 2011 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.