A biological signal display apparatus includes: a stimulation unit which performs stimulation on a living body； a measurement unit which measures an evoked response evoked by the stimulation； a calculator which calculates a feature amount of the evoked response； a display unit； and a display controller which, based on the feature amount calculated by the calculator, displays a bar-shaped image on the display unit, each time when the stimulation is performed, the bar-shaped image corresponding with the evoked response on the display unit.
