Improving recognition of respiratory sensations in healthy adults.

In two discrimination training studies, we noted improvements in the ability of healthy individuals to discriminate between respiratory sensations. We trained individuals to discriminate between respiratory sensations elicited during inspiration in Experiment 1 and during expiration in Experiment 2. We elicited respiratory sensations by having participants breathe through circuits that differed in their resistance to air flow. Training, in both experiments, was conducted within the context of a task in which individuals judged which member of a series of respiratory circuit pairs was easier to breathe through. To improve the accuracy of judgments, we gave participants feedback of their performance, and we faded air flow resistance. The latter procedure consisted of presenting circuit pairs in order of increasing similarity. Individuals who received performance feedback with fading of air flow resistance demonstrated reliable improvements in discrimination from pre- to posttraining in both experiments, but controls, who received either performance feedback or practice in discrimination did not. These findings may contribute to improving awareness of respiratory sensations in asthma patients, and thereby bolster efforts to manage asthma.