Real-Time Cognitive Workload States Recognition from Ultra Short-Term ECG Signals on Trainee Surgeons Using 1D Convolutional Neural Networks

Kaizhe Jin, R. Naik, Adrian Rubio Solis, G. Mylonas
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Abstract

Surgery is a mentally demanding task that is focused on patient safety and requires the precise execution of motor control and decision making in a timely manner. Episodes of high Cognitive Workload (CWL) induced by stressors or distractions have been shown to lead to inferior performance potentially compromising patient safety [1]. We have proposed a promising CWL assess- ment platform utilising a wide range of physiological sensors [2]. However, there are some disadvantages associated with a complex multimodal sensing design, including high device cost, long set up time and the dis- comfort caused by wearing multiple wearable sensors for long periods during surgery. To address this problem, the proposed one-dimensional convolutional neural network (1D-CNN) model discussed here, offers an alternative solution to recognising CWL states, achieving satisfac- tory performance (91.3% accuracy) with the use of a wireless ECG sensor alone, showing great potential for widespread deployment in the operating room (OR). MATERIALS AND METHODS
基于一维卷积神经网络的实习外科医生超短期心电信号的实时认知负荷状态识别
外科手术是一项精神要求很高的任务,重点是患者的安全,需要精确地执行运动控制和及时的决策。由压力源或分心引起的高认知负荷(CWL)发作已被证明会导致表现不佳,可能危及患者的安全[1]。我们提出了一个有前途的CWL评估平台,利用广泛的生理传感器[2]。然而,复杂的多模态传感设计存在一些缺点,包括设备成本高,设置时间长以及在手术期间长时间佩戴多个可穿戴传感器所引起的不适。为了解决这个问题,本文讨论的一维卷积神经网络(1D-CNN)模型提供了一种识别CWL状态的替代解决方案,仅使用无线心电传感器即可获得令人满意的性能(准确率为91.3%),显示出在手术室(OR)广泛部署的巨大潜力。材料与方法
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