This information processing device is provided with: a receiving unit which receives a detected value detected by means of a head-mounted device which is worn on the head of a user and detects the blood flow rate in the head； a calculating unit which extracts a first signal by passing the detected value through a first filter which extracts a signal in a first frequency band, extracts a second signal by passing the detected value through a second filter which extracts a signal in a second frequency band, which is a frequency band that is higher than the first frequency band, and extracts a third signal, which is the envelope of the second signal, from the second signal； and an output unit which outputs the first signal and the third signal in association with one another.
