Working memory impairment and cardiovascular hyperarousal in young primary insomniacs

Nicola Cellini, Massimiliano de Zambotti, Naima Covassin, Michela Sarlo, Luciano Stegagno

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We investigated memory performance and cardiovascular activity in 13 primary insomniacs (PI) compared to 13 good sleepers (GS). Cardiovascular and hemodynamic measures, including heart rate, pre-ejection period, and blood pressure, were continuously recorded at rest and during two memory tasks. PI showed working memory impairment under high cognitive load, but performed as well as GS in an easy memory task. In addition, PI exhibited markers of hyperarousal both at rest and during the execution of the two tasks. However, we failed to find a clear-cut relationship between cardiovascular hyperarousal and cognitive performance in insomniacs. Our data provide further evidence of both cognitive impairment and cardiovascular hyperarousal in primary insomnia, while not supporting the hypothesis of hyperarousal as a compensatory mechanism to overcome cognitive challenges.

Original languageEnglish (US)
Pages (from-to)206-214
Number of pages9
JournalPsychophysiology
Volume51
Issue number2
DOIs
StatePublished - Feb 2014

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Keywords

  • Autonomic activity
  • Heart rate variability
  • Hyperarousal
  • Impedance cardiography
  • Insomnia
  • Working memory

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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