An information display device includes a component extraction unit configured to extract a requested component from multiple given waveforms that are cut out of multiple signal waveforms based on biological signals that are detected; and a noise component selection unit configured to accept selecting, as a noise component, a result of the extracting from multiple results of the extracting by the component extraction unit, and the noise component selection unit displays the multiple results of the extracting by the component extraction unit and times at which the specific waveforms occur.