Advertisement

Smooth Muscle pp 185-199 | Cite as

Recording of Extracellular Electrical Activity

  • A. Bortoff

Abstract

Much of smooth muscle electrophysiology, especially of the gastrointestinal tract, involves the recording of extracellular potentials rather than transmembrane potentials. This has been necessitated in large part by the technical difficulties inherent in intracellular recording from such small, mechanically active cells, especially when recording is attempted in vivo. The relative ease of extracellular recording can be offset, however, by the configurational complexity of the resultant tracings. This can be attributed, in part, to the patterns of extracellular current flow associated with changes in membrane potential of a core conductor. Many of the properties of core conductors are exhibited by smooth muscle cells and by some smooth muscle tissues.

Keywords

Current Flow Recording Electrode Lead Wire Silver Wire Smooth Muscle Tissue 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bass, P. and Wiley, J. N. 1965. Electrical and extraluminal contractile-force activity of the duodenum of the dog. Am. J. Dig. Dis., 10:183–200.PubMedCrossRefGoogle Scholar
  2. Bass, P., Code, C. F., and Lambert, E. H. 1961. Motor and electric activity of the duodenum. Am. J. Physiol., 201:287–291.PubMedGoogle Scholar
  3. Bortoff, A. 1961. Electrical activity of intestine recorded with pressure electrode. Am. J. Physiol., 201:209–212.Google Scholar
  4. Bortoff, A. 1967. Configuration of intestinal slow waves obtained by monopolar recording techniques. Am. J.Physiol., 213:157–162.PubMedGoogle Scholar
  5. Bunker, C. E., Johnson, L. P., and Nelson, T. S. 1967. Chronic in situ studies of the electrical activity of the small intestine. Arch. Surg., 95:259–268.PubMedCrossRefGoogle Scholar
  6. Churney, L. and Ohshima, H. 1964. An improved suction electrode for recording from the dog heart in situ. J. Appl. Physiol., 19:793–798.PubMedGoogle Scholar
  7. Csapo, Á. 1969. The luteo-placental shift, the guardian of pre-natal life. Postgrad. Med. J., 45:56–64.CrossRefGoogle Scholar
  8. Csapo, Á. I., Takeda, H., and Wood, C. 1963. Volume and activity of the parturient rabbit uterus. Am. J. Obst. Gynec., 85:813–818.Google Scholar
  9. Gillespie, J. S. 1962. The electrical and mechanical responses of intestinal smooth muscle cells to stimulation of their extrinsic parasympathetic nerves. J. Physiol. (Lond.), 162:76–92.Google Scholar
  10. Kowalewski, K. and Scharf, R. 1971. Secretion of hydrochloric acid by ex vivo isolated canine stomach. Scand. J. Gastroent., 6:675–681.PubMedCrossRefGoogle Scholar
  11. McCoy, E. J. and Bass, P. 1963. Chronic electrical activity of gastroduodenal area: Effects of food and certain catecholamines. Am. J. Physiol., 205:439–445.PubMedGoogle Scholar
  12. Niedergerke, R. and Orkand, R. K. 1966. The dual effect of calcium on the action potential of the frog’s heart. J. Physiol. (Lond.), 184:291–311.Google Scholar
  13. Steedman, W. 1966. Micro-electrode studies on mammalian vascular muscle. J. Physiol. (Lond.), 186:382–400.Google Scholar
  14. Szurszewski, J. and Steggerda, F. R. 1968. The effect of hypoxia on the electrical slow wave of the canine small mtestine. Am. J. Dig. Dis., 13:168–177PubMedCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1975

Authors and Affiliations

  • A. Bortoff
    • 1
  1. 1.Department of Physiology, Upstate Medical CenterS.U.N.Y.SyracuseUSA

Personalised recommendations