Abstract
Training has been identified as a means to reduce mental workload. However, there are limitations associated with many current mental workload measurement techniques. Thermography of the face has been identified as a potential workload measurement tool that may be more closely related to performance and subjective ratings of performance than many other physiological measures. The objective of this study was to validate the efficacy of thermography for assessing mental workload. Twenty participants, 10 males and 10 females, completed seven blocks of an alpha-numeric task. Changes in nose temperature (ANT), task accuracy, reaction time, and two subjective mental workload ratings were collected. Performance improved over time, while ANT and subjective mental workload ratings decreased. Nose temperature was found to be strongly correlated with both performance measures and subjective perceptions of mental workload.
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