Abstract: A physiological information processing method executed by a computer. The physiological information processing method includes obtaining a plurality of electroencephalogram signals indicating an electroencephalogram of a subject, using a plurality of electrodes attached to a head of the subject, each of the plurality of electroencephalogram signals being associated with a respective one of the plurality of electrodes, obtaining, from each of the plurality of electroencephalogram signals, a plurality of artifact component signals indicating different types of artifacts, calculating effective values of the plurality of artifact component signals of each of the electroencephalogram signals, determining whether the effective value of each of the artifact component signals of the electroencephalogram signal satisfies a predetermined condition, and visually presenting information related to the artifact associated with the artifact component signal of which the effective value satisfies the predetermined condition.