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Related Experiment Video

Updated: Dec 25, 2025

Generation of Local CA1 &#947; Oscillations by Tetanic Stimulation
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Spinal genesis of Mayer waves.

George Zaki Ghali1, Michael George Zaki Ghali2, Emil Zaki Ghali3

  • 1United States Environmental Protection Agency, Arlington, VA; Department of Toxicology, Purdue University, West Lafayette, IN, USA.

Neural Regeneration Research
|April 5, 2020
PubMed
Summary

Mayer waves, a type of cardiovascular variability, have controversial origins. This study suggests central sympathetic neurons and spinal cord mechanisms contribute to Mayer wave generation, alongside baroreflex and vasomotor activity.

Keywords:
Mayer wavescentralcervicalgenesisoriginsspinal cordsympathogenesistransection

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Area of Science:

  • Physiology
  • Cardiovascular Research
  • Neuroscience

Background:

  • Cardiovascular spectra exhibit variability, with respirophasic and very low-frequency oscillations described historically.
  • The genesis and functional significance of Mayer waves, a specific low-frequency oscillation, remain debated.
  • Existing theories propose baroreflex and central supraspinal mechanisms for Mayer wave generation.

Purpose of the Study:

  • To investigate the underlying mechanisms and potential origins of Mayer waves.
  • To explore the role of central sympathetic neurons and spinal cord in Mayer wave genesis.

Main Methods:

  • Review of historical descriptions of cardiovascular oscillations.
  • Analysis of studies demonstrating Mayer wave persistence after high cervical transection.
  • Hypothesizing central sympathetic neuronal oscillation and distributed brainstem/spinal cord oscillators.

Main Results:

  • Mayer waves persist after high cervical transection, suggesting spinal cord involvement.
  • Evidence supports a capacity for spinal mechanisms in generating these oscillations.
  • Multiple oscillators in the brainstem and spinal cord are proposed.

Conclusions:

  • Mayer waves may originate from oscillating central sympathetic neurons.
  • Genesis of Mayer waves could involve multiple brainstem and spinal cord oscillators.
  • Baroreflex and vasomotor mechanisms may contribute concurrently to Mayer wave formation.