• DocumentCode
    1220699
  • Title

    A Head-Mounted 24-Channel Evoked Potential Preamplifier Employing Low-Noise Operational Amplifiers

  • Author

    Ary, James P.

  • Author_Institution
    Department of Bioinformation Systems, California Institute of Technology
  • Issue
    3
  • fYear
    1977
  • fDate
    5/1/1977 12:00:00 AM
  • Firstpage
    293
  • Lastpage
    297
  • Abstract
    A simple circuit employing operational amplifiers yields an inexpensive low-noise biological amplifier. Design parameters are discussed and performance measured. When twenty-four of these amplifiers were incorporated in a head-mounted evoked potential preamplifier, noise increased while common mode rejection and stability decreased. These effects are explained and successfully controlled by minimizing source resistance and adding a simple feedback circuit.
  • Keywords
    Circuit stability; Diodes; Humans; Low-noise amplifiers; Operational amplifiers; Preamplifiers; Signal generators; Temperature distribution; Temperature measurement; Voltage; Amplifiers; Brain; Electrophysiology; Evoked Potentials; Feedback; Humans;
  • fLanguage
    English
  • Journal_Title
    Biomedical Engineering, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9294
  • Type

    jour

  • DOI
    10.1109/TBME.1977.326229
  • Filename
    4122691
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1220699