The Event-Related Brain Potential as a Selective Index of Display Load

Jack B. Isreal; Christopher D. Wickens; Emanuel Donchin · 1979 · Proceedings of the Human Factors Society Annual Meeting

DOI: 10.1177/1071181379023001139

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Abstract

As an index of task workload, the possible advantages of the event-related brain potential (ERP) over traditional secondary task techniques and psychophysiological measures are described and previous efforts to validate the use of ERPs in this context are discussed. A series of six experiments is then reported in which the effects of tracking difficulty and display-monitoring load manipulations on secondary-task reaction time and ERP measures are compared. The results are interpreted within the framework of a “multiple reservoir” conception of processing resources and task workload.

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