I’ve used the OHC/IHC proportions provided by Moore and Glasburg (1997) to preprocess audiograms for articulation index calculations. These allow me to determine the amounts of the sensorineural hearing loss to model as attenuation or as noise, respectively. This usage may not have been their intention, although it works reasonably well with all the data I’ve examined. Moore and Glasburg derived their values from loudness functions (not DPOAEs). Lopez-Poveda and Johannessen (2012) arrived at very different values and dismiss the Moore and Glasburg work a little too easily, in my opinion. I don’t necessarily agree that numbers from either study actually reflect hair cell count, but it is certainly an important area of study with direct and immediate application to hearing aids signal processing.
Moore, BCJ and Glasberg, BR (1997). A model of loudness perception applied to cochlear hearing loss. Auditory Neuroscience 3: 289-311.
Christine Rankovic, PhD
Dear auditory list subscribers,
Alternatively, if you know of any other behavioural methods
to estimate proportion of OHC/IHC loss, such as documented in the Journal of
the Association for Research in Otolaryngology by Lopez-Poveda and
Johannesen (2012), I would very much appreciate hearing about such techniques.
Note: the title of the paper I referred to is "Behavioral Estimates of the Contribution of Inner and Outer Hair Cell Dysfunction to Individualized Audiometric Loss"