to report that measurement. However, results can be influenced by the participant's preexisting knowledge of his or her heart rate and an insensitivity to heart rate change.

Heartbeat detection tasks work by providing a participant with a musical tone which is played simultaneously or non-simultaneously with one's heartbeat, asking the participant to report whether it is simultaneous or not with the tones. Heartbeat detection is commonly used because of its ability discern an individual's performance