Re: History of cochlear implant slides ("Ward R. Drennan" )

Subject: Re: History of cochlear implant slides
From:    "Ward R. Drennan"  <wdrennan(at)MAIL.KHRI.MED.UMICH.EDU>
Date:    Wed, 24 Mar 2004 15:12:23 -0500

Thanks, That's helpful.
Ward

> Ward,
>
> There is a slide that shows improvement in speech recognition starting
> from 1981 up to 1999, but I'm not sure it's exactly what you're
> looking for. This slide mostly shows that as we moved from feature
> extraction type strategies to ones that provide more of the incoming
> signal, patients improved. However, It does not seperate the influence
> of a broader criteria and other issues that influence performance. I
> have attached a powerpoint file with this slide.
>
> Doug
>
>
>
>
> Quoting "Ward R. Drennan" <wdrennan(at)MAIL.KHRI.MED.UMICH.EDU>:
>
> > I've heard that there's a slide (power point image) from Cochlear
> > Corp. that showed changes in the cochlear implant performance over
> > its history. It shows the improvements in speech recognition over
> > the last 40 years based mostly on improvements in the speech
> > processor design, but also on increases in the number of electrodes
> > used. If I recall correctly avergage word recognition performance
> > improved from 10-15% in the late 70s to 70-80% in the mid 90s for
> > post-lingually deafened adults. This is great progress and the slide
> > shows it well.
> >
> > Does anyone have this slide or know where I could get a copy?
> >
>
>
> -----------------------------------------------------------------
> Sladen, Douglas P. Vanderbilt University Email:
> douglas.p.sladen(at)Vanderbilt.Edu
>