Neural state monitoring via auditory evoked potentials in Ear EEG

作为多学科研究计划的一部分，其中耳朵EEG将用于在多任务驾驶模拟器环境中导出性能和决策的生物标志物[10]，可以测试来自ASSR的相位信息在神经状态评估和预测中使用的可行性。实验结构如下：实验1认知负荷测试条件下从耳脑电测量ASSR相位同步性的验证。感兴趣的研究问题：ASSR的相位同步调制可以从耳朵检测到吗？实验细节：参与者将被要求完成一组复杂度不断增加的N-back记忆任务，同时记录ASSR。相位特性的耳朵和头皮ASSR将进行分析，以探测与认知workload.Experiment 2A研究的性能增强驾驶模拟器environment研究问题的兴趣：什么是影响多感官性能增强认知工作量，生理信号的变异性和性能的参与者？实验细节：受试者将提供组合的视觉/听觉的援助和他们的影响超过performance will be analyzed.Experiment 3 Measure the ASSR of a subject in driving simulator environment研究问题的兴趣：是否ASSR反映认知工作量的变化？实验细节：ASSR将被记录，而在一组实验的难度和复杂性的主要，次要和第三任务增加，在没有性能增强aids.Experiment 4测量ASSR的参与者在驾驶模拟器environment研究问题的兴趣：是否ASSR反映了精神疲劳的变化？实验细节：ASSR将被记录，而在实验2中使用的相同协议期间，在参与者中引起精神疲劳。实验5在驾驶模拟器环境中闭合回路感兴趣的研究问题：工作负荷是否可以作为驾驶员当前状态的函数来改变以提高他们的表现？实验细节：实验环境将与实验1和3相同，包括一个闭环系统，能够识别驾驶员所经历的认知工作负荷水平并对其采取行动。

As part of a multi-disciplinary research initiative, in which ear EEG will be used to derive bio-markers of performance and decision making in a multi-task driving simulator environment [10], the feasibility of phase information from ASSR being used in the context of neural state evaluation and prediction can be tested. Below is the experimental structure to be followed:Experiment 1Verification of ASSR phase synchrony measurement from ear EEG under cognitive workload tests. Research question of interest: Can the phase synchrony modulation of ASSR be detected from the ear? Experiment details: Participants will be asked to complete a set of N-back memory tasks of increasing complexity, while the ASSR is recorded. Phase properties of the ear and scalp ASSR will be analysed to probe correlations with cognitive workload.Experiment 2A study of performance enhancements in the driving simulator environmentResearch question of interest: What is the effect of multi-sensory performance enhancements on cognitive workload, physiological signals variability and performance of the participant?Experiment details: Subjects will be provided with combinations of visual/auditory aids and their impact over performance will be analysed.Experiment 3Measure the ASSR of a subject in the driving simulator environmentResearch question of interest: Does the ASSR reflect changes in cognitive workload?Experiment details:The ASSR will be recorded whilst the difficulty and complexity of primary, secondary and tertiary tasks are increased in a set of experiments, in the absence of performance enhancing aids.Experiment 4Measure the ASSR of a participant in the driving simulator environmentResearch question of interest: Does the ASSR reflect changes in mental fatigue?Experiment details: The ASSR will be recorded whilst mental fatigue is induced in the participant during the same protocol used in Experiment 2.Experiment 5Close the loop in the driving simulator environmentResearch question of interest: Can the workload be altered as a function of the current state of the driver to improve their performance?Experiment details: The experimental environment will be the same as in Experiment 1 and 3, with the inclusion of a closed-loop system able to identify the level of cognitive workload experienced by the driver and act upon it.