Efficient mental workload estimation using task-independent EEG features

Journal of Neural Engineering
Raphaelle N RoyStephane Bonnet

Abstract

Mental workload is frequently estimated by EEG-based mental state monitoring systems. Usually, these systems use spectral markers and event-related potentials (ERPs). To our knowledge, no study has directly compared their performance for mental workload assessment, nor evaluated the stability in time of these markers and of the performance of the associated mental workload estimators.  This study proposes a comparison of two processing chains, one based on the power in five frequency bands, and one based on ERPs, both including a spatial filtering step (respectively CSP and CCA), an FLDA classification and a 10-fold cross-validation. To get closer to a real life implementation, spectral markers were extracted from a short window (i.e. towards reactive systems) that did not include any motor activity and the analyzed ERPs were elicited by a task-independent probe that required a reflex-like answer (i.e. close to the ones required by dead man's vigilance devices). The data were acquired from 20 participants who performed a Sternberg memory task for 90 min (i.e. 2/6 digits to memorize) inside which a simple detection task was inserted. The results were compared both when the testing was performed at the beginning and end of the se...Continue Reading

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Citations

Oct 30, 2016·Frontiers in Human Neuroscience·Raphaëlle N RoyAurélie Campagne
Jun 20, 2017·Journal of Neural Engineering·Sheng-Hsiou Hsu, Tzyy-Ping Jung
Feb 10, 2018·Frontiers in Human Neuroscience·Kevin J VerdièreFrédéric Dehais
May 5, 2020·Technology and Health Care : Official Journal of the European Society for Engineering and Medicine·Xiaoli FanWei Zhang
Jun 30, 2019·Sensors·Trung-Hau Nguyen, Wan-Young Chung
Jun 15, 2017·Frontiers in Human Neuroscience·Carina WalterMartin Spüler
May 5, 2020·Technology and Health Care : Official Journal of the European Society for Engineering and Medicine·Chengping LiuYa Duan
Nov 15, 2018·Frontiers in Human Neuroscience·Nicolette B MogileverEmily B J Coffey
Feb 20, 2021·Scientific Reports·Brendan Parsons, Jocelyn Faubert
Jul 20, 2021·Journal of Neural Engineering·Shaohua TangZheng Li

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