低水平心脏信号的记录和分析-猫眼课题宝

低水平心脏信号的记录和分析

批准号：

3345785

负责人：

NANCY C FLOWERS

金额：

$16.4万

依托单位：

AUGUSTA UNIVERSITY

依托单位国家：

美国

项目类别：

财政年份：

1986

资助国家：

美国

项目状态：

已结题

起止时间：

1986-07-01 至 1990-06-30

来源：

https://reporter.nih.gov/project-details/3345785

关键词：

atrioventricular node clinical biomedical equipment computer simulation dogs electrocardiography electrophysiology heart catheterization heart disorder heart disorder diagnosis human subject image processing noninvasive diagnosis

中文摘要

翻译

我们的方法在记录低电平心脏信号使用了一个高度屏蔽

英文摘要

Our approach in recording low level cardiac signals utilized a highly shielded room, multiple parallel inputs from closely spaced chest electrodes into an analog circuit for linear amplification followed by input into an equivalent number of logarithmic amplifiers. Further elimination of 60 hertz noise and its harmonics is achieved after which the signal enters a digital logic circuit which examines the instantaneous polarity from each of the original inputs and passes this information to gates. When identical polarities are present from all of the closely spaced inputs, the signal is regarded as true, and a coincidence condition fulfilled. When failure to meet such coincidence conditions obtains, the signal is rejected as probable amplifier noise. In the final step, a variable gain amplifier is employed so that the portion of the signal in which His-Purkinje activity is expected is accented.

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