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Remijn G B, Nakajima Y, Tanaka S, 2007, "Perceptual completion of a sound with a short silent gap" Perception 36(6) 898 – 917
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Perceptual completion of a sound with a short silent gap

Gerard B Remijn, Yoshitaka Nakajima, Shunsuke Tanaka

Received 6 February 2006, in revised form 27 July 2006; published online 30 May 2007

Abstract. Listeners reported the perceptual completion of a sound in stimuli consisting of two crossing frequency glides of unequal duration that shared a short silent gap (40 ms or less) at their crossing point. Even though both glides shared the gap, it was consistently perceived only in the shorter glide, whereas the longer glide could be perceptually completed. Studies on perceptual completion in the auditory domain reported so far have shown that completion of a sound with a gap occurs only if the gap is filled with energy from another sound. In the stimuli used here, however, no such substitute energy was present in the gap, showing evidence for perceptual completion of a sound without local stimulation (‘modal’ completion). Perceptual completion of the long glide occurred under both monaural and dichotic presentation of the gap-sharing glides; it therefore involves central stages of auditory processing. The inclusion of the gap in the short glide, rather than in both the long and the short glide, is explained in terms of auditory event and stream formation.

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