Jochumsen Mads, Knoche Hendrik, Kidmose Preben, Kjær Troels Wesenberg, Dinesen Birthe Irene
Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Department of Architecture, Design and Media Technology, Aalborg University, Aalborg, Denmark.
Front Hum Neurosci. 2020 Feb 14;14:13. doi: 10.3389/fnhum.2020.00013. eCollection 2020.
Brain-computer interfaces (BCIs) have successfully been used for motor recovery training in stroke patients. However, the setup of BCI systems is complex and may be divided into (1) mounting the headset and (2) calibration of the BCI. One of the major problems is mounting the headset for recording brain activity in a stroke rehabilitation context, and usability testing of this is limited. In this study, the aim was to compare the translational aspects of mounting five different commercially available headsets from a user perspective and investigate the design considerations associated with technology transfer to rehabilitation clinics and home use. No EEG signals were recorded, so the effectiveness of the systems have not been evaluated. Three out of five headsets covered the motor cortex which is needed to pick up movement intentions of attempted movements. The other two were as control and reference for potential design considerations. As primary stakeholders, nine stroke patients, eight therapists and two relatives participated; the stroke patients mounted the headsets themselves. The setup time was recorded, and participants filled in questionnaires related to comfort, aesthetics, setup complexity, overall satisfaction, and general design considerations. The patients had difficulties in mounting all headsets except for a headband with a dry electrode located on the forehead (control). The therapists and relatives were able to mount all headsets. The fastest headset to mount was the headband, and the most preferred headsets were the headband and a behind-ear headset (control). The most preferred headset that covered the motor cortex used water-based electrodes. The patients reported that it was important that they could mount the headset themselves for them to use it every day at home. These results have implications for design considerations for the development of BCI systems to be used in rehabilitation clinics and in the patient's home.
脑机接口（BCIs）已成功应用于中风患者的运动康复训练。然而，BCI系统的设置很复杂，可分为（1）头戴设备的安装和（2）BCI的校准。其中一个主要问题是在中风康复环境中安装用于记录大脑活动的头戴设备，而对此的可用性测试有限。在本研究中，目的是从用户角度比较五种不同商用头戴设备安装方面的转化情况，并调查与技术转移到康复诊所和家庭使用相关的设计考虑因素。未记录脑电图信号，因此尚未评估系统的有效性。五种头戴设备中有三种覆盖了运动皮层，这是捕捉尝试运动的运动意图所必需的。另外两种作为潜在设计考虑因素的对照和参考。作为主要利益相关者，九名中风患者、八名治疗师和两名亲属参与其中；中风患者自己安装头戴设备。记录安装时间，参与者填写与舒适度、美观性、安装复杂性、总体满意度和一般设计考虑因素相关的问卷。除了前额带有干电极的头带（对照）外，患者在安装所有头戴设备时都有困难。治疗师和亲属能够安装所有头戴设备。安装最快的头戴设备是头带，最受欢迎的头戴设备是头带和耳后式头戴设备（对照）。覆盖运动皮层的最受欢迎的头戴设备使用水基电极。患者报告说，对他们来说，能够自己安装头戴设备以便在家中每天使用非常重要。这些结果对用于康复诊所和患者家中的BCI系统开发的设计考虑因素具有启示意义。
