Measurements of Oxygen Partial Pressure and Single-Unit Action Potentials in the Parieto-Visceral Ganglion of Aplysia californica

  • P. E. Coyer
  • E. R. Strong
  • J. H. Halsey
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 92)


Repeatable microelectrode recording from identifiable neurons within the isolated parieto-visceral ganglion of the sea hare Aplysia californica has been accomplished because the somatic positions and axonal projections into either hemisphere of these cells have been demonstrated both anatomically and electrophysiologically (Rosenbluth, 1963; Coggeshall, 1967; and Frazier et al, 1967). Only reference has been made to the metabolic dependence of these neurons (Chalazonitis and Arvanitaki, 1970) although interruption of the burst pattern in isolated pacemaker neurons exposed to metabolic blocking agents occurs (Chen et al, 1973). However, the direct measurement of the cytosolic oxygen levels and activity levels of specific neurons has not been attempted through multi-electrode recording of simultaneous action potentials and oxygen partial pressure.


Membrane Potential Oxygen Partial Pressure Cell Membrane Potential Membrane Potential Change Intracellular Oxygen 
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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • P. E. Coyer
    • 1
  • E. R. Strong
    • 1
  • J. H. Halsey
    • 1
  1. 1.Department of NeurologyUniversity of Alabama Medical CenterBirminghamUSA

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