MINIATURIZED MULTICHANNEL JC EEG DATA ACQUISITION

小型化多通道 JC EEG 数据采集

• 批准号: 6073591
• 负责人: K Jeffrey Eriksen
• 金额: $ 9.92万
• 依托单位: ELECTRICAL GEODESICS, INC.
• 依托单位国家: 美国
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6073591
• 关键词: bioengineering /biomedical engineering; biomedical equipment development; computer system design /evaluation; electrical impedance; electrical measurement; electroencephalography; human subject; microprocessor /microchip; miniature biomedical equipment; patient monitoring device

With the advent of high channel count EEG recording using 64, 128, or 256 channels there is renewed interest in attempting to minimize the cost, size, weight and power consumption of complete amplification and data acquisition systems. The ideal solution would be a system that could be worn on the body with a single tether, or a wireless connection, to transmit data to a storage device. The only way to achieve this level of miniaturization is to design custom integrated circuits. We propose an overall goal of designing and building a complete EEG system on a chip (or a small number of chips). To reduce cost and power consumption we will use CMOS processes. Given this constraint, the most difficult part of the design will be to create a low- noise front-end amplifier, which we will attempt in the Phase I project. We will design and prototype, using the MOSIS service, an integrated circuit amplifier with characteristics suitable for amplifying scalp EEG. This circuit will then be tested and compared to our existing amplifier and other commercial amplifiers. In Phase II we will design and produce complete acquisition systems on a chip by adding filtering, sample/hold, multiplexing and analog-digital conversion. PROPOSED COMMERCIAL APPLICATIONS: The proposed miniature integrated circuit EEG data acquisition chip would become the basis for a line of inexpensive, low power, wearable multichannel EEG data acquisition systems for research and clinical use. They would be particularly attractive for long-term monitoring in sleep and epilepsy, cognitive workload studies in space and industrial environments, emerging neuromonitoring applications, as well as in traditional research and clinical settings.

随着使用64、128或256个通道的高通道数EEG记录的出现，人们重新对试图使完整的放大和数据采集系统的成本、尺寸、重量和功耗最小化感兴趣。理想的解决方案将是一个系统，可以佩戴在身体上，用一根系绳或无线连接，将数据传输到存储设备。实现这种微型化水平的唯一方法是设计定制集成电路。我们提出了一个总体目标，设计和建立一个完整的脑电图系统的芯片（或少量的芯片）。为了降低成本和功耗，我们将使用CMOS工艺。考虑到这一限制，设计中最困难的部分将是创建一个低噪声前端放大器，我们将在第一阶段项目中尝试。我们将设计和原型，使用MOSIS服务，一个集成电路放大器的特点适合放大头皮脑电图。然后将对该电路进行测试，并与我们现有的放大器和其他商用放大器进行比较。在第二阶段，我们将在一个芯片上设计和生产完整的采集系统，增加滤波，采样/保持，多路复用和模数转换。拟议的商业应用：所提出的微型集成电路EEG数据采集芯片将成为一系列廉价、低功耗、可穿戴的多通道EEG数据采集系统的基础，用于研究和临床使用。它们对于睡眠和癫痫的长期监测、空间和工业环境中的认知工作负荷研究、新兴的神经监测应用以及传统研究和临床环境特别有吸引力。