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Influence of Workload on Auditory Evoked Potentials in a Single-stimulus Paradigm

Roy, Raphaëlle N. and Breust, A. and Bonnet, Stéphane and Porcherot, J. and Charbonnier, Sylvie and Godin, C. and Campagne, Aurélie Influence of Workload on Auditory Evoked Potentials in a Single-stimulus Paradigm. (2015) In: International Conference on Physiological Computing Systems, 11 February 2015 - 13 February 2015 (Angers, France).

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Official URL: http://dx.doi.org/10.5220/0005235701040111

Abstract

Mental workload can be assessed via neurophysiological markers. Temporal features such as event related potentials (ERPs) are one of those which are very often described in the literature. However, most of the studies that evaluate their sensitivity to workload use secondary tasks. Yet potentials elicited by ignored stimuli could provide mental state monitoring systems with less intrusive probing methods. For instance, auditory probing systems could be used in adaptive driving or e-learning applications. This study evaluates how workload influences auditory evoked potentials (AEPs) elicited by a single-stimulus paradigm when probes are to be ignored. Ten participants performed a Sternberg memory task on a touchpad with three levels of difficulty plus a view-only condition. In addition, they performed two ecological tasks of their choice, one deemed easy (e.g. reading novels), and the other difficult (e.g. programming). AEPs were elicited thanks to pure tones presented during the memory task retention period, and during the whole extent of the external tasks. Performance and AEPs were recorded and analyzed. Participants’ accuracy decreased linearly with increasing workload, whereas the difference in amplitude between the P3 and its adjacent components, N2 and SW, increased. This reveals the relevance of this triphasic sequence for mental workload assessment.

Item Type:Conference or Workshop Item (Paper)
Additional Information:ISBN: 978-989-758-085-7
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
Other partners > Université Pierre Mendès France, Grenoble 2 - UPMF (FRANCE)
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
Other partners > Université Stendhal-Grenoble 3 - U3 (FRANCE)
Other partners > Université de Savoie Mont Blanc - USMB (FRANCE)
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Deposited By: Raphaëlle ROY
Deposited On:13 Apr 2018 14:23

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