Fig. 1.
(top) Representative audio data of two feedback-on trials. Dashed lines indicate when a tone began, solid lines indicate when a response began, and response time was defined as the distance between these two points. (bottom) Feedback state, where the width of the black rectangle indicates the duration of feedback activation. Originally all tones would have been labeled feedback-on; however, only those labeled FBon/act had feedback activation coincide with the secondary task. Additionally, tones played before any feedback is given are relabeled FBon/naïve because the subject is still naïve as to whether this is a feedback-on or -off trial. For analysis purposes, tones were numbered by their appearance within each trial (events) as well as their appearance throughout the entire session (index).