Chaos, Phase Locking and Bifurcation in Normal Squid Axons

  • Gen Matsumoto
  • Nobuyuki Takahashi
  • Yoshiro Hanyu
Part of the NATO ASI Series book series (NSSA, volume 138)


Membrane potential responses of squid giant axons to periodic trains of current pulses were experimentally studied in detail. The giant axon of squid (Doryteuthis bleekeri) was exposed under normal physiological conditions; the intact axon was immersed in natural sea water at 14 ± 0.01°C, and stimulated with periodic trains of current pulses with the pulse intensity I and the period T. The firing modes were determined as a function of I/Ith and T where Ith stood for the threshold current intensity: periodic and chaotic responses were obtained.


Firing Rate Current Pulse Firing Pattern Potential Response Giant Axon 
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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • Gen Matsumoto
    • 1
  • Nobuyuki Takahashi
    • 2
  • Yoshiro Hanyu
    • 3
  1. 1.Electrotechnical LaboratoryIbaraki 305Japan
  2. 2.Tokyo Institute of TechnologyYokohama City, Kanagawa 227Japan
  3. 3.Department of PhysicsFaculty of Science and TechnologyYokohama City, Kanagawa 223Japan

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