Key result
The amplitude of the 0.10-Hz component of heart-rate variability systematically decreases as the load on working memory increases, serving as an index of operator effort.
Why the study?
Does increased working memory load affect the 0.10-Hz component of heart-rate variability?
Population
Subjects performing tasks requiring working memory (specific details not provided in abstract)
Comparison
Increased load on working memory vs Lower load on working memory or baseline
Design
Other
Authors
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May index operator effort via 0.10-Hz HRV; leaves open validation before clinical or operational use.
Observational
Does increased working memory load affect the 0.10-Hz component of heart-rate variability?
Spectral analysis of sinus arrhythmia, specifically the 0.10-Hz component, can serve as a physiological index of operator effort and working memory load.
Aasman et al. (1987) conducted an observational in Operator effort and working memory load. Working memory load was evaluated on Amplitude of the 0.10-Hz component of heart-rate variability. The amplitude of the 0.10-Hz component of heart-rate variability systematically decreases as the load on working memory increases, serving as an index of operator effort.
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