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What Can Be Learned About Motoneurone Properties from Studying Firing Patterns?

  • Randall K. Powers
  • Kemal S. Türker
  • Marc D. Binder
Chapter
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 508)

Abstract

The discharge patterns of tonically-firing neurones are influenced by both the characteristics of their presynaptic input and their intrinsic properties. The regularity of the discharge of motoneurones is thought to reflect their prominent post-spike afterhyperpolarization (AHP). When a motoneurone fires at steady mean rate, the distribution of interspike intervals is determined by the amplitude and frequency content of the synaptic noise together with the decrease in excitability following a spike due to AHP. This paper considers how motoneurone discharge statistics can be used to estimate AHP trajectories as well as a motoneurone’s sensitivity to excitatory input.

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Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  • Randall K. Powers
    • 1
  • Kemal S. Türker
    • 2
  • Marc D. Binder
    • 1
  1. 1.Dept of Physiology and BiophysicsUniv. of Washington School of MedicineSeattleUSA
  2. 2.Dept of PhysiologyUniv. of AdelaideAdelaideAustralia

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