One thing- yes OHCs contribute ~60dB but you can't just add the 60dB of OHC and 30dB of IHC because inner hair cells transmit sound to the auditory cortex. In people with profound hearing loss Outer and Inner hair cells are damaged.
This article may be of interest:
http://www.etymotic.com/publications/erl-0043-2000.pdf
If I understand the article, IHC's contribute to sound differently than OHC's.
For an 85db HL, the article explains 40% of the IHCs are missing. Would it appear like this:
OXOOXXOOXOXOOXO
X= missing IHC. This would be seen as intermittant cochlear dead regions.
Indeed, there is little middle ground to work with. I go from normal hearing to profoundly deaf very rapidly. It can be quite frustrating. The aids do help in certain situations, but not much. Still, I feel it's better than without. One of the big reasons I use them is for the visibility. I WANT people to see my aids and know that I can't hear them. If I didn't, a lot of people would think I am ignoring them, or that I'm stupid or on drugs. The FM system and Bluetooth gadgetry is also useful. Also, they help a bit for listening to music.
Have you seen my thread on cochlear dead regions yet? I have a good reply there. Don't worry about others, I never had people rude like that to me. I just say I am hearing impaired and they understand. No one can tell me to wear HAs or not, it's my choice how often I want to wear HAs.
I wear them whenever I am out in the hearing world, which is most of the time. I take them off at home. They help with speech a little, but only in certain situations. I understand far less than 50% of speech, even in quiet environments
How did you score on any speech tests you got at the audiologist, even a SRT test using spondee words? Perhaps reprogramming your HAs not to amplify well into your cochlear dead zones will really improve your speech. Again, see that thread for more info:
http://www.alldeaf.com/hearing-aids-cochlear-implants/63471-good-articles-identifying-cochlear-dead-spots.html
Yep, I'm pretty sure of that too. Does this mean that a CI cannot stimulate sound in that region of the cochlea?
A CI does not care how much or little residual hearing you have, it destroys all natural hearing then stimulates your auditory nerves with electrical pulses. You
can have cochlear dead zones with CI if some electrodes malfunction or if your auditory nerve is damaged in some frequencies. The CI can be mapped to transport sounds around the dead zones.
I have a mixed loss. My eardrums are a nice little mass of scar tissue. I respond on bone conducted tests because I bypass the eardrums.
Did you respond(other than vibrotactile) to the bone conduction test? Were you able to respond at anytime in the past when you had more hearing? How much of a conductive loss is your eardrums causing? Any possibility for a tactaid?
I'm currently trying out a Naida and a Starkey destiny (one in each ear). I really love the Naida but it isn't loud enough.
It does really suck to loose the ability to understand speech.
My hearing loss is progressive. One year I went from being "sorta deaf" to Profoundly deaf. That was a shock.
I find the Naida adequately loud with the gains turned to the max in the frequencies I can still hear. The low frequencies give the loudness, aren't you at 90db HL in the lows? Were you born hearing? What caused the progressive hearing loss? How much speech do you understand today?
I also had a new audiogram recently. Still severe to profound but the high frequencies have disappeared. And speech understanding went waaay down. This time is easier. I have an interpreter for classes which makes life easier. Hopefully VocRehab will keep their promise to pay for new hearing aids so that I can go to medical school and be an awesome doctor.
Can you scan it and show us or just type it here? My audiograms are in my blog. I lost my highs sometime after age 16. I read your older posts and you mention CI from time to time. Any interest in CI now? When you lose all your hearing? Never want a CI? Good luck on being a doctor, I used to want to be a doctor myself!