Even if the driver is not directed toward the object surrounding the line of sight, determines the amount of attention to the peripheral visual field area of the driver, to perform a safe driving assistance in accordance with the determination result. And electroencephalogram measurement section for measuring the EEG signal of the driver, with the central stimulus presentation unit for presenting visual stimuli in the central visual field of the driver, the driver note the amount of discriminating apparatus, peripheral stimulus for presenting visual stimuli to the peripheral vision of the driver and threshold setting section for setting the discrimination threshold of attention the amount determined from the distribution of the amplitude of the event-related potential in the brain wave signal that starts the presentation time and presenting part, the stimulation of the central visual field, the origin and the presentation time of stimulation of peripheral vision and an attention amount determination unit that determines the amount of attention by comparing the discrimination threshold and the amplitude of the event-related potential in the electroencephalogram signal was.運転者が視線を周辺の対象物に向けていない場合でも、運転者の周辺視野領域に対する注意量を判別し、判別結果に応じた安全運転支援を行う。運転注意量判別装置は、運転者の脳波信号を計測する脳波計測部と、運転者の中心視野に視覚刺激を呈示する中心刺激呈示部と、運転者の周辺視野に視覚刺激を呈示する周辺刺激呈示部と、中心視野の刺激の呈示時点を起点とした脳波信号における事象関連電位の振幅の分布から注意量判別の判別閾値を設定する閾値設定部と、周辺視野の刺激の呈示時点を起点とした脳波信号における事象関連電位の振幅と判別閾値との比較により注意量を判別する注意量判別部とを備えている。
