Modeling Brain Dynamics During Virtual Reality-Based Emergency Response Learning Under Stress
Modeling Brain Dynamics During Virtual Reality-Based Emergency Response Learning Under Stress
复制标题
压力下基于虚拟现实的应急响应学习期间的大脑动力学建模
DOI：
10.1177/00187208211054894
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Mehta, Ranjana K.
中科院分区：
文献类型：
--
作者：
Tyagi, Oshin;Hopko, Sarah;Kang, John;Shi, Yangming;Du, Jing;Mehta, Ranjana K.
背景压力会影响训练过程中的学习，基于虚拟现实（VR）的训练系统可以操纵压力，从而提高消防员的记忆力和检索能力。使用功能近红外光谱（fNIRS）的脑成像可以促进基于VR的自适应训练系统的开发，该系统可以连续评估受训者的学习和认知状态。40名消防员在VR中接受了紧急关机训练，并被随机分配到对照组。或者压力小组压力组在熟悉和训练阶段经历了包括烟雾、火灾和爆炸在内的压力源。两组受试者分别接受应激记忆提取和非应激记忆提取。参与者的性能分数，fNIRS为基础的神经活动，和功能之间的连接前额叶皮层（PFC）和运动区域的培训和检索phase.ResultsThe性能分数表明，学习速度较慢的压力组相比，对照组，但两组在每个检索条件下进行类似。与对照组相比，应激组表现出抑制PFC激活。然而，在训练期间，他们在PFC区域内以及在提取阶段PFC和运动区域之间表现出更强的连接性。更强的大脑连接）与应激组和对照组在提取阶段的表现相当。
BackgroundStress affects learning during training, and virtual reality (VR) based training systems that manipulate stress can improve retention and retrieval performance for firefighters. Brain imaging using functional Near Infrared Spectroscopy (fNIRS) can facilitate development of VR-based adaptive training systems that can continuously assess the trainee’s states of learning and cognition.ObjectiveThe aim of this study was to model the neural dynamics associated with learning and retrieval under stress in a VR-based emergency response training exercise.MethodsForty firefighters underwent an emergency shutdown training in VR and were randomly assigned to either a control or a stress group. The stress group experienced stressors including smoke, fire, and explosions during the familiarization and training phase. Both groups underwent a stress memory retrieval and no-stress memory retrieval condition. Participant’s performance scores, fNIRS-based neural activity, and functional connectivity between the prefrontal cortex (PFC) and motor regions were obtained for the training and retrieval phases.ResultsThe performance scores indicate that the rate of learning was slower in the stress group compared to the control group, but both groups performed similarly during each retrieval condition. Compared to the control group, the stress group exhibited suppressed PFC activation. However, they showed stronger connectivity within the PFC regions during the training and between PFC and motor regions during the retrieval phases.DiscussionWhile stress impaired performance during training, adoption of stress-adaptive neural strategies (i.e., stronger brain connectivity) were associated with comparable performance between the stress and the control groups during the retrieval phase.
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影响因子：
0.7
作者：
Hall SJ;Aisbett B;Tait JL;Turner AI;Ferguson SA;Main LC
通讯作者：
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影响因子：
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作者：
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