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In Reply to: RE: We have to get away from mechanical transducers. When we are able to directly stimulate the auditory nerve, posted by cfb on July 01, 2012 at 06:17:13
First, all natural sounds are heard via the transformations of the external, middle and inner ears and, so, bypassing them by direct auditory nerve stimulation would only require that we simulate their effects anyway.
Second, in order to stimulate the auditory nerve electrically, we would still need mechanical transducers to encode the sound into electrical signals.
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We have to go beyond a vibrating mylar or paper membrane and a coil of wire if we wish to replicate reality at some future date. We must be able to record all the neural data going into the brain and then reproduce that in another individual. Take the current crude cochlear implants or auditory brain stem implants and extrapolate a hundred years of development with nanotechnology. Instead of today's mere couple dozen electrode array, implants would have a million electrodes in the device array. Where every individual nerve cell could be stimulated.
If the starting point is a live acoustic performance, the energy produced is mechanical. So, if your end-point is direct electrical or magnetic brain stimulation, at least one transduction step is necessary. What one does in between is moot.
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