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Related Experiment Videos

Tendon reflex variability and method of stimulation.

J Stam1, K M Tan

  • 1Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands.

Electroencephalography and Clinical Neurophysiology
|November 1, 1987
PubMed
Summary
This summary is machine-generated.

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Human reflex variability is significant, even with precise instruments. A standard reflex hammer provides results comparable to complex stimulators, suggesting its reliability for many applications.

Area of Science:

  • Neuroscience
  • Human Physiology
  • Biomedical Engineering

Background:

  • Human tendon reflexes exhibit considerable variability, posing challenges for accurate measurement.
  • Understanding stimulus factors is crucial for interpreting reflex responses and their variability.

Purpose of the Study:

  • To compare the reflex variability elicited by a standard hand-held reflex hammer versus a sophisticated instrumental stimulator.
  • To assess the contribution of stimulus intensity and method to human reflex variability.

Main Methods:

  • Two stimulation methods were compared in healthy subjects: a standard reflex hammer with a transducer and an instrumental stimulator.
  • Stimulus intensity was measured, and reflex responses were recorded across a range of intensities.

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Main Results:

  • The hand-held reflex hammer demonstrated similar reflex variability to the instrumental stimulator.
  • This consistency was observed for both maximal and sub-maximal stimuli across various intensities.

Conclusions:

  • A simple hand-held reflex hammer is a reliable tool for eliciting human tendon reflexes in many clinical and research settings.
  • The variability in human reflexes is not solely attributable to the precision of the stimulation device.