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Amplitude Modulation and Loudness in Cochlear Implantees
Journal of the Association for Research in Otolaryngology, 10/06/09

McKay CM et al. – The results have important implications for the interpretation of experiments measuring modulation detection that do not control loudness cues. We show that several previously published results regarding the effect of carrier rate and added noise on modulation detection could be reinterpreted in the light of these findings.

Exclusive Author Commentary
Colette M. McKay, 10/07/09

This paper is relevant to fitting of cochlear implants, particularly the way that loudness is coded via electrical stimulation. Amplitude modulation detection is a psychophysical ability that can help predict speech understanding and help us to understand why some patients have poor outcomes. This paper casts a critical eye on some aspects of previous work measuring modulation detection, as the results may havbe been contaminated by the effects of modulation on loudness (a loudness change not being the cue that gives information about the speech temporal envelope).

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