The time constants of motor and sensory peripheral nerve fibers measured with the method of latent addition

Marcela Panizza, Jan Nilsson, Bradley J. Roth, John Rothwell, Mark Hallett

Research output: Contribution to journalArticlepeer-review

Abstract

The time constants of motor and sensory fibers in the human ulnar, median and tibial nerves were determined using the method of latent addition. Two square-wave stimuli were applied: the first one was subthreshold and the second, at various delays relative to the first, was adjusted to achieve threshold activation. Strength-delay curves were obtained, from which the time constant was determined using a mathematical model. Sensory fibers had time constants that were about 3 times the time constant for motor fibers. The strength-delay curves gave similar time constants as those obtained from strength-duration curves.

Original languageEnglish
Pages (from-to)147-154
Number of pages8
JournalElectroencephalography and Clinical Neurophysiology - Evoked Potentials
Volume93
Issue number2
DOIs
Publication statusPublished - 1994

Keywords

  • Latent addition
  • Median nerve
  • Motor nerve fiber
  • Nerve fiber
  • Sensory nerve fiber
  • Tibial nerve
  • Time constant
  • Ulnar nerve

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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