Digital reproduction of biopotential waveforms for neurophysiological studies.

Published

Journal Article

A simple biological signal generator capable of reproducing complex biopotential waveforms is described. It is constructed by a combination of digital and analog circuit components and can be used under different experimental conditions, such as in calibration of biomedical instrumentation systems, or simply as a function generator providing voltage outputs of various waveforms. The biopotential waveform to be generated is sampled at a high frequency and the samples are stored sequentially in a programmable read only memory (PROM). The samples are then fed in the same sequence to a digital-to-analog (D/A) converter and the resulting output is amplified and a DC offset is added. External controls are provided to adjust the DC offset, amplitude and repetition rate of the signal generated. The reproduced voltage signals are stable and superior in quality to those produced by conventional biological signal generators.

Full Text

Duke Authors

Cited Authors

  • Nandedkar, SD; Ingle, FW; Sanders, DB; Kim, YI

Published Date

  • November 11, 1982

Published In

Volume / Issue

  • 395 / 3

Start / End Page

  • 251 - 252

PubMed ID

  • 7155798

Pubmed Central ID

  • 7155798

International Standard Serial Number (ISSN)

  • 0031-6768

Digital Object Identifier (DOI)

  • 10.1007/bf00584818

Language

  • eng

Conference Location

  • Germany