头皮脑电采集技术研究

摘要

EEG signals reflect the health status and cognitive activity of the human brain,which is an important parameter in brain disease diagnosis and treatment,as well as cognitive neuroscience.EEG monitoring is also an important method in the field of brain-computer interface.The scalp EEG acquisition technology exhibits non-invasive advantages when compared with intracranial EEG acquisition technology,and the advantage of providing multi-channel and multi-brain area monitoring functions when compared to the forehead EEG acquisition technology,therefore is widely used.However,hair on the scalp affects EEG acquisition performance,thereby the application of the scalp EEG acquisition technology is limited.This paper presents a survey on the EEG electrode devices and wearable systems of the scalp EEG acquisition technology,together with an analysis of the progress of both scientific research and industrialization in this field.The future development directions of the scalp EEG acquisition technology havebeen discussed from the aspects of new materials,advanced structure and processing,and system integration.This study might show a guidance value and reference significance for the development of scalp EEG acquisition technology.%脑电能反映人脑的健康及认知活动状况,是脑疾病诊治及认知神经科学的重要参数.脑电监测也是脑机接口的重要手段.其中,头皮脑电采集技术相对于颅内脑电采集技术具备无创的优点,相对于前额脑电采集能提供多通道多脑区的脑电信号,用途最广泛.然而头发遮蔽影响脑电采集性能,从而限制其应用.对头皮脑电采集技术的电极器件及可穿戴系统进行了综述研究,分析该领域国内外科研及产业化进展情况,并从新型材料、先进结构和加工工艺、系统集成三方面对头皮脑电采集技术的发展进行展望.研究对于头皮脑电采集技术的发展具有指导价值与参考意义.