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Jeff: 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. Reference: Moore, BCJ and Glasberg, BR (1997). A model of loudness
perception applied to cochlear hearing loss. Auditory Neuroscience 3: 289-311. Christine Rankovic, PhD From: AUDITORY - Research
in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Jeff
Bruce 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" -- |