The Relation Between Rhythmic Cardiovascular Variability and Reactivity to Orthostatic, Cognitive, and Cold Pressor Stress

John P. Hatch, Keith Klatt, Stephen W. Porges, Lori Schroeder‐Jasheway, Josie D. Supik

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Two groups of normotensive, male subjects having either a positive or negative parental history of essential hypertension were exposed to passive body tilt from horizontal to a 70° head‐up posture, while systolic and diastolic blood pressure, heart period, and respiration amplitude were sampled on a beat‐by‐beat basis. Subjects also performed mental arithmetic and cold pressor tasks, and cardiovascular reactivity was expressed as change from baseline levels. The body tilt data were analyzed by cross‐spectral analysis focusing on two frequency bands, one between .06‐.1 Hz, and the other at the predominant breathing frequency. The two groups did not differ significantly in their basal levels of physiological activity or in their response to the tasks. Cross‐spectral analysis identified tilt induced changes in the power spectra and coherence spectra within the two frequency bands. These changes differed between the two frequency bands and among the various physiological response systems investigated. Larger rhythmic oscillations in heart period within both frequency bands predicted greater cardiovascular reactivity to the mental arithmetic task but not the cold pressor task. The results are discussed in terms of neural control mechanisms (e.g., vagal tone) implicated in the dynamic regulation of cardiovascular function during psychophysiological states such as stress.

Original languageEnglish (US)
Pages (from-to)48-56
Number of pages9
JournalPsychophysiology
Volume23
Issue number1
DOIs
StatePublished - Jan 1986

Keywords

  • Cardiovascular reactivity
  • Spectral analysis
  • Vagal tone (V̂)
  • Weighted coherence (Cw), Heart rate, Blood pressure, Respiration rate, Cold pressor, Mental arithmetic, Passive body tilt, Parental history of hypertension

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry

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