, Volume 31, Issue 8, pp 901–902

A possible age-related decrement in the conduction velocity ofAplysia neuron R2

  • P. R. Harley
Specialia Biologica


In late winter and in spring, the conduction velocity of the R2 axon ofAplysia californica is 0.48 m/sec or more in all specimens. However, in the summer, fall and early winter, some sexually mature animals exhibit markedly diminished R2 conduction rates (as low as 0.24 m/sec). It is possible that this reduced velocity is a reflection of the age of the specimen from which the axon is taken.

Copyright information

© Birkhäuser Verlag 1975

Authors and Affiliations

  • P. R. Harley
    • 1
  1. 1.Department of Psychology and Marine Sciences LaboratoryMemorial University of NewfoundlandSt. JohnsCanada

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