SIGNAL CONDITIONING & DATA ACQUISITION SYSTEM FOR SLEEP DEPRIVATION STUDIES

信号调理

• 批准号: 3896202
• 负责人: C P MUDD
• 金额: --
• 依托单位: NATIONAL CENTER FOR RESEARCH RESOURCES
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/3896202
• 关键词: body temperature; computer program /software; electroencephalography; electromyography; heart rate; laboratory rat; sleep deprivation; sleep disorders

Current studies into sleep disorders involve the simultaneous measurement of a combination of physical parameters. These include EEG, EMG, heart rate, core temperature, and brain temperature. CPB (Clinical Psycho- Biology) is presently investigating sleep disorders using animal models. Rats display sleep behavior similar to humans and are used in this investigation. A signal interface system has been designed which processes thermistor inputs as well as RF transmitted temperature signals. A microcomputer is used to linearize and calibrate the temperature signals. With the use of factory calibrated thermistors, the software converts the measured signals directly into degrees Centigrade for storage and display. Two Metrabyte A/D cards are run in background mode to acquire 16 channels of 'fast' signals (EEG's, EMG's etc.) and 16 channels of 'slow' signals (temperature and heart rate) . We use the timers on the Metrabyte cards to synchronize the two cards and yet still operate them at different sampling rates.

目前对睡眠障碍的研究包括同时测量 物理参数的组合。这些包括脑电图，肌电图，心脏 心率、核心温度和大脑温度。CPB（临床心理学） 生物学）目前正在使用动物模型研究睡眠障碍。 老鼠表现出与人类相似的睡眠行为， 调查 设计了一种热敏电阻信号处理接口系统 输入以及RF传输的温度信号。微型计算机 用于线性化和校准温度信号。与使用 工厂校准的热敏电阻，软件将测量信号 直接转换为摄氏度以供存储和显示。 2兆字节 A/D卡在后台模式下运行，以获取16个通道的“快速” 信号（EEG、EMG等）和16个“慢”信号通道（温度 和心率）。我们用Metrabyte卡上的计时器来同步 这两张卡，但仍然以不同的采样率运行它们。