Optimal stimulus duration for the H reflex

M. Panizza, J. Nilsson, M. Hallett

Research output: Contribution to journalArticlepeer-review


Authorities advocate different stimulus durations to produce an H reflex. In order to find the optimal stimulus duration for recording H reflexes, the recruitment curves for H reflexes and M responses were studied in 10 healthy subjects. The H reflex was recorded in the upper and lower extremities, and the durations of the electrical stimulus used ranged from 0.1 to 3 msec. The amplitude of the H reflex and the relation between the H reflex and M response changed with stimulus duration. H reflexes are brought out to advantage using a stimulus duration between 0.5 and 1 msec.

Original languageEnglish
Pages (from-to)576-579
Number of pages4
JournalMuscle and Nerve
Issue number7
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)


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