Interoceptive and exteroceptive tracking accuracy
Participant tracking of the sensory stimuli (respiration and visual circle) was analyzed in terms of error (in milliseconds) between key presses and the peaks and troughs of stimulus waveforms within each of the active task blocks. Stimulus waveforms were first phase-corrected to maximally match peaks and troughs with keypresses. Error was then measured as the average time difference between stimulus peaks/troughs and key presses (Participants accurately and reliably tracked both the respiratory and visual stimuli (Estimated marginal means for target tracking errorTarget indicates the target for which button tracking accuracy is calculated; for Active Exteroception, this is always the circle, and for Active Interoception, this is always the breath, but for the Active Matching condition, both targets are required to align with keypresses, so both accuracies can be computed. Data reported are in milliseconds lag relative to the target inflection points.Tukey-adjusted pairwise comparisons of target tracking errorData reported are in milliseconds lag relative to the target inflection points. * indicates 