 Such audible individuals are temporally extended and bounded, serve as the locus for auditory attention, prompt completion effects, and are subject to figure-ground distinctions in pitch space. For these reasons, the auditory processes involved in their perception parallel those involved in the visual perception of ordinary three-dimensional objects. The parallels suggest a shared sense in which vision and audition involve a more general form of object perception (see, e.g., Kubovy and Van Valkenburg 2001, Scholl 2001, Griffiths and Warren 2004, O’Callaghan 2008a, Matthen 2010).