The extent to which an auditory image can influence detection, encoding and recall of a stimulus through its relationships to perception and memory has been documented. It has been suggested that auditory imagery may slow the decay of memory for pitch, as demonstrated by T. A. Keller, Cowan, and Saults (1995) who demonstrated that the prevention of rehearsal resulted in decreased memory performance for pitch comparison tasks through the introduction of distracting and competing stimuli. It has also been reported that auditory imagery for verbal material is impaired when subvocalization is blocked. These findings suggest that subvocalization is common to both auditory imagery and rehearsal.