Temporal Correlation in Phrenic Neural Activity

  • Bernard Hoop
  • William L. Krause
  • Homayoun Kazemi
Chapter
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 450)

Abstract

Neural activity which gives rise to eupnea fluctuates in a complex manner. Apparently “noisy” variations in activity of the phrenic nerve may display a fractal scaling relationship. Fractal scaling in eupnea is the consequence of physical and chemical processes acting over short time scales at the cellular level, and which are correlated with similar processes acting simultaneously over longer time scales. Specifically, variations in phrenic neural bursts may not be independent random fluctuations or entirely due to short-range influences4, but may exhibit temporal correlation indicative of fractal scaling. West and Deering20 have demonstrated that fractal processes are essentially unresponsive to error and very tolerant of variability in the physiological environment. In this view, eupnea with its concomitant stability to error from a broad spectrum of inputs must have the error-tolerant properties of fractals.

Keywords

Power Spectral Density Temporal Correlation Phrenic Nerve Detrended Fluctuation Analysis Fractal Scaling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Bernard Hoop
    • 1
  • William L. Krause
    • 1
  • Homayoun Kazemi
    • 1
  1. 1.Pulmonary and Critical Care Unit, Medical Services, Harvard Medical SchoolMassachusetts General HospitalBostonUSA

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