Toward minimum startle after take-over request: A preliminary study of physiological data

Abstract

In this work, we introduce the preliminary analysis of driver's physiological data after receiving take-over request (TOR). Studies have shown that physiological measurements on drivers may provide better insights into the cognitive behavior and performance of drivers. Our goal is to examine the effect of two common TOR modalities (visual-Auditory and generic auditory), in the limited take-over time budget, on psychophysical states and take-over behavior of the drivers. We applied multimodal physiological data streams-i.e. eye-Tracker, EEG, GSR and PPG to have a comprehensive overview of driver's workload, stress and reaction time for each TOR modality. The preliminary results suggest that visual-Auditory modality leads to a safer take-over behavior than generic auditory tone. EEG and heart rate variability results showed a significantly greater engagement on the visual-Auditory TOR than for the auditory TOR. Results of this study can be used to investigate the safer modality inducing the least startle reactions.