Evaluation of Myocardial and Peripheral Vascular Responses During Reaction Time, Mental Arithmetic, and Cold Pressor Tasks

Michael T. Allen, Paul A. Obrist, Andrew Sherwood, Michael D. Growell

Research output: Contribution to journalArticle

85 Scopus citations

Abstract

The primary purpose of this study was to examine the covariation of cardiac output and forearm blood flow during reaction time, mental arithmetic, and cold pressor tasks. Cardiac output was indexed using impedance cardiography, whereas impedance venous occlusion plethysmography was used lo index forearm blood flow. Cardiac output increased significantly over resting values in all three tasks, hut the pattern of these increases differed. Large heart rate increases during mental arithmetic and cold pressor tasks more than offset stroke volume decreases; the increases in the reaction time task were due to relatively smaller heart rate increases with stroke volume augmentation. For forearm blood flow, all task levels were higher than resting levels, but only mental arithmetic levels were statistically higher. The correlation between cardiac output and forearm blood flow change was significant for the reaction time task, but not for the mental arithmetic or cold pressor tasks.

Original languageEnglish (US)
Pages (from-to)648-656
Number of pages9
JournalPsychophysiology
Volume24
Issue number6
DOIs
StatePublished - Nov 1987

Keywords

  • Cardiovascular reactivity
  • Cold pressor
  • Forearm blood flow
  • Impedance cardiograph
  • Impedance venous occlusion plethysmography
  • Mental arithmetic
  • Reaction time

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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