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2009
IEEE

Using Heart Rate Monitors to Detect Mental Stress

10 years 8 months ago
Using Heart Rate Monitors to Detect Mental Stress
— This article describes an approach to detecting mental stress using unobtrusive wearable sensors. The approach relies on estimating the state of the autonomic nervous system from an analysis of heart rate variability. Namely, we use a non-linear system identification technique known as principal dynamic modes (PDM) to predict the activation level of the two autonomic branches: sympathetic (i.e. stress-inducing) and parasympathetic (i.e. relaxationrelated). We validate the method on a discrimination problem with two psychophysiological conditions, one associated with mental tasks and one induced by relaxation exercises. Our results indicate that PDM features are more stable and less subject-dependent than spectral features, though the latter provide higher classification performance within subjects. When PDM and spectral features are combined, our system discriminates stressful events with a success rate of 83% within subjects (69% between subjects). Keywords-autonomic nervous syste...
Jongyoon Choi, Ricardo Gutierrez-Osuna
Added 18 May 2010
Updated 18 May 2010
Type Conference
Year 2009
Where BSN
Authors Jongyoon Choi, Ricardo Gutierrez-Osuna
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