ALT Figure 7A-C from the paper "Respiration, heartbeat, and conscious tactile perception" by Martin Grund and colleagues (2021, accepted for publication in the Journal of Neuroscience) shows that participants adapted their respiratory cycle to expected stimulus onsets to preferentially occur during late inspiration / early expiration. This closely matched heart rate variation (sinus arrhythmia) across the respiratory cycle such that most frequent stimulation onsets occurred during the period of highest heart rate probably indicating highest alertness and cortical excitability. Tactile detection rate was highest during the first quadrant after expiration onset. Inter-individually, stronger respiratory phase-locking to the task was associated with higher detection rates.