An inexpensive miniature preamplifier for monitoring electroencephalographic and extracellular action potentials in unrestrained animals

C. J. Sherry, T. J. Marczynski, G. Karmos, J. Y. Wei

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A miniature preamplifier is described that is suitable for use with microelectrodes with moderately high impedance (i.e. 10 to 25 μ diameter). The device has a gain of 500 and an input impedance of 2.2x107 ohms. The input noise is less than 20 microvolts r.m.s. (Journal received: March 1977)

Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalActa physiologica Academiae Scientiarum Hungaricae
Volume46
Issue number1
Publication statusPublished - Dec 1 1975

ASJC Scopus subject areas

  • Physiology

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