First, it should be noted that all participants were perceptual tested while blindfolded, hence any immediate influence of visual deprivation on responses was balanced between the groups. Further, the influence of visual deprivation on harmonicity discrimination was found to be highly time-sensitive: no improvement in discrimination was observed in participants who were visually deprived for 60 min, and the perceptual enhancement in participants who were visually deprived for 90 min was found to dissipate 30-60 min following the restoration of visual input. Such specificity in the observed auditory-perceptual change after visual deprivation cannot readily be explained as a change in response strategy.