MULTIUSER GEODESIC SENSOR NET EEG/ERP SYSTEM

新的脑电图（EEG）和事件相关电位（ERP） 技术大大提高了测量大脑的空间分辨率， 电活动。然而， 这些高分辨率EEG/ERP技术在临床中的应用 研究因为应用密集的电极阵列需要时间， 缺乏有效获取和处理数据的软件， 购置设备的费用。一个测地传感器网络，由 Electrical Geodesics Inc. (EGI)，允许应用128个电极， 只有20分钟。与高阻抗电极帽配合使用时 放大器和先进的数据处理软件，该系统产生 脑电的“最新”时空表征 领域的 我们提出了一个具有成本效益的测地线传感器网络脑电图系统，将 允许两个完善的电生理实验室和其他 研究人员进行临床研究，以利用最新的 高分辨率EEG/ERP技术的发展。该系统包括 两个128通道EEG采集工作站和一个中央数据处理 工作站这些工作站将位于新的高分辨率 纽约州立精神病研究所（NYSPI）的电生理学单位， 将通过高速光纤网络连接在一起。两 该系统的实验室和其他用户代表了广泛的 EEG/ERP研究，包括青少年抑郁症研究， 成人精神分裂症和强迫症的研究， 婴儿研究、儿童发育研究以及 正常衰老以及阿尔茨海默病均匀致密的 128通道EEG系统提供的头皮覆盖范围， 用于脑电场时空分析的软件将 大大增强了这些研究中的地形数据。并将提供 电生理和其他成像联合测量的基础 例如，MR 1。

New electroencephalographic (EEG) and event-related potential (ERP) techniques have greatly improved spatial resolution in measures of brain electrical activity. There has, however, been relatively little application of these high-resolution EEG/ERP techniques in clinical research because of the time needed to apply dense arrays of electrodes, the lack of software to efficiently acquire and process the data and the cost of acquiring equipment. A Geodesic Sensor Net, developed by Electrical Geodesics Inc. (EGI), allows application of 128 electrodes in only 20 minutes. When used in conjunction with high-impedance Net amplifiers and advanced data processing software, this system yields "state of the art" spatiotemporal characterization of brain electrical fields. We are proposing a cost-effective Geodesic Sensor Net EEG System that will allow two well established electrophysiologic laboratories and other researchers doing clinical research to take advantage of the latest developments in high resolution EEG/ERP technology. The system includes two 128 channel EEG acquisition workstations and a central data processing workstation. These workstations will be located in a new High Resolution Electrophysiology Unit at New York State Psychiatric Institute (NYSPI) and will be linked together with a fast fiber optics network. The two laboratories and other users of the system represent a wide range of EEG/ERP research, including studies of depression in adolescents and adults, studies of schizophrenic and obsessive-compulsive disorders, studies in infants, developmental studies in children, and studies of normal aging, as well as Alzheimer's disease. The uniform and dense coverage of scalp afforded by the 128 channel EEG system and advanced software for spatiotemporal analysis of brain electrical fields will greatly enhance the topographic data in these studies. and will provide a basis for joint measurement in electrophysiologic and other imaging modalities, such as MR1.