Quote:
...in view of previous studies suggesting attentional orienting effects on respiration (Boiten, et al., 1994; Leskovsek, et al.), we predicted that the respiratory cycle would phase-lock to the stimulus presentations (respiratory phase-locking hypothesis)... Dynamic responses of the respiratory system to stimulus presentations have been reported previously (Leskovsek, et al.; Porges and Raskin, 1969). Using various respiratory measures, several studies found changes in the respiratory cycle following stimulus presentations. 3)
