Advertisement

Pflügers Archiv

, Volume 360, Issue 1, pp 45–48 | Cite as

A tungsten electrode insulated by a concentric arrangement of glass-pipettes for iontophoresis

  • U. Sonnhof
  • D. W. Richter
  • R. Steinberg
Article

Summary

A method is described by which electrolytically sharpened tungsten wires were coated with a coaxial assembly of 5–8 glass-capillaries. This glass coating provides good insulation and high rigidity of the tungsten electrodes. The glass pipettes were used for electrophoretic ejection of test substances and the tungsten electrode for extracellular recording of neuronal activity.

Key words

Tungsten Electrode Glass Coating Iontophoresis 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Curtis, D. R.: Microelectrophoresis. In: W. L. Nastuk (Ed.): Physical techniques in biological research, Vol. 5, pp. 144–190. New York: Academic Press 1964Google Scholar
  2. Curtis, D. R.: A method for assembly of “parallel” micro-pipettes. Electroenceph. clin. Neurophysiol.24, 587–589 (1968)Google Scholar
  3. Ford, D. M.: Multi-barrelled micropipettes with improved recording characteristics. J. Physiol. (Lond.)239, 8 P (1974)Google Scholar
  4. Fries, W., Zieglgänsberger, W.: A method to discriminate axonal from cellbody activity and to analyse “silent cells”. Exp. Brain Res.21, 441–445 (1974)Google Scholar
  5. Oliver, R. P.: A simple rapid method for preparing parallel micropipette electrodes. Electroenceph. clin. Neurophysiol.31, 284–286 (1971)Google Scholar
  6. Sonnhof, U.: A multi-barrelled coaxial electrode for iontophoresis and intracellular recording with a gold shield of the central pipette for capacitance neutralization. Pflügers Arch341, 351–358 (1973)Google Scholar
  7. Spehlmann, R.: Multi-barrelled coaxial micro-pipettes with independent control of the central recording barrel. Electroenceph. clin. Neurophysiol.27, 201–204 (1969)Google Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • U. Sonnhof
    • 1
  • D. W. Richter
    • 1
  • R. Steinberg
    • 1
  1. 1.Physiologisches Institut der Universität MünchenGermany

Personalised recommendations