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Age differences in high frequency phasic heart rate variability and performance response to increased executive

Dana L Byrd1, Erin T Reuther2, Joseph P H McNamara3

  • 1Psychology and Sociology, Texas A&M University-Kingsville Kingsville, TX, USA.

Frontiers in Psychology
|March 24, 2015
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Summary
This summary is machine-generated.

This study found that physiological responses to mental effort, measured by heart rate variability (HRV), differ between children and adults across executive functioning tasks. Time-pressure tasks most effectively reveal these age-related differences in cognitive load management.

Keywords:
adultchildheart rate variabilityinhibition (psychology)planningrespiratory sinus arrhythmiaworking memory

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Area of Science:

  • Cognitive Neuroscience
  • Developmental Psychology
  • Psychophysiology

Background:

  • Executive functioning skills mature throughout childhood and adolescence.
  • Mental effort elicits physiological responses, such as changes in heart rate variability (HRV).
  • Understanding age-related differences in cognitive load processing is crucial for developmental research.

Purpose of the Study:

  • To compare frontally mediated physiological responses to mental effort during executive functioning tasks between children and adults.
  • To investigate age differences in executive functioning skills under varying cognitive demands.
  • To examine the relationship between task type, executive load, and heart rate variability (HRV) responses.

Main Methods:

  • Participants included children (6–10 years) and adults.
  • Behavioral performance and phasic heart rate variability (HRV) were recorded during three executive functioning tasks: inhibition (IN), working memory (WM), and planning/problem solving (PL).
  • Executive load was manipulated by increasing task difficulty.

Main Results:

  • Behavioral performance declined with increased executive demand in both age groups.
  • Adults showed suppressed HRV during high load IN and WM tasks.
  • Children exhibited suppressed HRV during moderate load WM tasks.
  • Neither group displayed HRV suppression during the planning/problem solving (PL) task, regardless of load.

Conclusions:

  • Phasic high-frequency HRV appears sensitive to executive function tasks with time-response pressure.
  • Self-paced tasks requiring frontal lobe activation may not be sufficient to elicit HRV responsiveness to increasing cognitive demand.
  • Age-related differences exist in the physiological management of mental effort during specific executive functioning tasks.