Even when a driver is not directing his or her line of sight to objects in the surroundings, the amount of attention of the driver to the peripheral visual field can be determined, and safe driving assistance in accordance with the result of determination can be provided.A driving attention amount determination apparatus includes: an electroencephalogram measurement section for measuring an electroencephalogram signal of a driver an attention amount determination section for, from the electroencephalogram signal being measured based on a starting point which is a time point of occurrence of a visual stimulation occurring in the peripheral visual field of the driver, determining an amount of attention of the driver to the peripheral visual field and an output section for calling attention of the driver by outputting a signal based on a result of the determination.
