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A Study on Evaluating a Voice-Activated System by EEGs and EOGs
Published September 28, 2005 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
For reasons of convenience and safety, it is important to assess the drivers' workload while using in-vehicle devices. Recently, we proposed a new psychophysiological measure for assessing drivers' attention: eye-fixation-related-potential (EFRP). EFRP is a kind of event-related brain potential measurable in natural driving. In the present study, we examined the variation of drivers' attention while manipulating a car navigation system by measuring EFRPs. There were two tasks: a voice-activated task (the drivers manipulated the navigation system via voice) and a manual task (the drivers manipulated the navigation system via hand). The results showed that the amplitude of P100 component of EFRP during simulated and actual driving decreased greatly with the manual task when compared to the voice-activated task. This finding implies that drivers can manipulate in-vehicle systems more safety by the voice-activated devices than the manual devices.