Kinesthesia in a sustained-attention driving task
Kinesthesia in a sustained-attention driving task
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DOI：
10.1016/j.neuroimage.2014.01.015
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发表时间：
2014-05-01
期刊：
影响因子：
5.7
通讯作者：
Lin, Chin-Teng
中科院分区：
文献类型：
--
作者：
Chuang, Chun-Hsiang;Ko, Li-Wei;Lin, Chin-Teng
本研究探讨了在沉浸式驾驶模拟器中持续注意任务中动觉刺激对大脑活动的影响。多个时间尺度上的紧张性和阶段性脑反应进行了分析，使用独立成分分析（伊卡）确定的脑电图（EEG）源的时频分析。随机引入的车道偏离事件的反应时间（RT）排序EEG频谱显示不同的性能水平下的动觉刺激对大脑的不同影响。实验结果表明，脑电频谱动力学高度相关的性能失误时，驾驶涉及动觉反馈。此外，在现实的环境中，涉及视觉和动觉反馈，最佳，次优，和性能差的群体之间的功率谱的传递关系被发现占主导地位，在大多数的独立组件。与仅具有视觉输入的静态环境相比，动觉反馈在准备动作和错误监控时减少了中央和额叶组件的θ功率增强，而在转向方向盘时加强了中央组件的α抑制。在行为方面，受试者倾向于在动觉的帮助下有较短的反应时间来处理意外事件，但只有当他们的表现是最佳的。注意力需求的减少，促进动觉反馈，最终显着增加了反应时间在次优性能状态。在复杂的任务范式和实验环境中的行为表现和神经认知之间的相互关系的神经生理学证据，在这项研究中，可能阐明我们的理解分布式脑动力学，支持自然的人类认知和复杂的协调，多关节自然主义行为，并导致在操作环境中的脑行为关系的理解。(C)2014年爱思唯尔公司All rights reserved.
This study investigated the effects of kinesthetic stimuli on brain activities during a sustained-attention task in an immersive driving simulator. Tonic and phasic brain responses on multiple timescales were analyzed using time-frequency analysis of electroencephalographic (EEG) sources identified by independent component analysis (ICA). Sorting EEG spectra with respect to reaction times (RT) to randomly introduced lane-departure events revealed distinct effects of kinesthetic stimuli on the brain under different performance levels. Experimental results indicated that EEG spectral dynamics highly correlated with performance lapses when driving involved kinesthetic feedback. Furthermore, in the realistic environment involving both visual and kinesthetic feedback, a transitive relationship of power spectra between optimal-, suboptimal-, and poor-performance groups was found predominately across most of the independent components. In contrast to the static environment with visual input only, kinesthetic feedback reduced theta-power augmentation in the central and frontal components when preparing for action and error monitoring, while strengthening alpha suppression in the central component while steering the wheel. In terms of behavior, subjects tended to have a short response time to process unexpected events with the assistance of kinesthesia, yet only when their performance was optimal. Decrease in attentional demand, facilitated by kinesthetic feedback, eventually significantly increased the reaction time in the suboptimal-performance state. Neurophysiological evidence of mutual relationships between behavioral performance and neurocognition in complex task paradigms and experimental environments, presented in this study, might elucidate our understanding of distributed brain dynamics, supporting natural human cognition and complex coordinated, multi-joint naturalistic behavior, and lead to improved understanding of brain-behavior relations in operating environments. (C) 2014 Elsevier Inc. All rights reserved.