Reply to “Reconsidering evidence for the suppression model of the octave illusion,” by C. D. Chambers, J. B. Mattingley, and S. A. Moss

Chambers, Mattingley, and Moss (2004) present a review of research and theory concerning the octave illusion, a phenomenon that was originally reported by Deutsch (1974). The authors argue against the two-channel model proposed by Deutsch (1975a) to explain the illusory percept that was most commonly obtained and propose, instead, that the illusion results from binaural fusion and diplacusis. This article replies to the arguments raised by Chambers et al. (2004) and argues that the octave illusion and the two-channel model proposed to explain it are in accordance with growing evidence for what-where dissociations in the auditory system and for illusory conjunctions in hearing.