A vocal phenomenon in which an involuntary vocal sound is made when one breathes in. This is caused by the vocal folds being unable to move fully apart during the taking in of breath. In other words, the folds are positioned somewhat in the voicing (adducted) position, even when one wants to inhale. In some cases, involuntary inspiratory phonation is heard only during the elicitations of the vocal capability battery, when the patient is asked to empty the lungs (breathe out fully) and then to fill them completely as rapidly and quietly as possible.
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