Calibration assessment in quantitative electroencephalographic brainmapping and evoked potential studies

A. K. Richards, Monica Hamilton-Bruce

Research output: Contribution to journalArticle


To ascertain the accuracy and consistency of Cadwell Spectrum 32, this paper performed the following tests: inputting a calibration signal and measuring the resultant amplitudes for quantitative electroencephalographs (qEEGs) and evoked potentials (EPs) in the mapping and standard montages, inputting a synchronous calibration signal and mapping it at varying times for qEEGs and Eps, as well as re-analysing the same electroencephalographic (EEG) epochs previously selected from 20 control subjects. Some of the accuracy and consistency limits of the hard- and software of the system with respect to the quantitative and topographic data were established. It is concluded that the systems need to be calibration-checked in the laboratories in which they are used, with an independent signal generator.

Original languageEnglish
Pages (from-to)150-154
Number of pages5
JournalAustralasian Physical and Engineering Sciences in Medicine
Issue number3
Publication statusPublished - 1 Sep 1994
Externally publishedYes

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy(all)

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