Retuning the ear to reverse hearing loss
Washington, August 29 (ANI): An international team of researchers from Switzerland and South Africa proposes a new method to overcome hearing deficits.
The researchers say that functioning regions of the ear can be retuned to recognise frequencies originally associated with damaged areas.
The researchers say that a possible reason for why the conventional hearing-aid and cochlear implant technology have only been partially successful in recreating the experience of the fully functioning ear could be because the hearing sensor must be fully embedded into the corto-cochlear feedback loop.
Though recently developed artificial cochleas are extremely close to the performance of the biological one, the integration of artificial cochleas into this loop is an extremely difficult micro-surgical task.
The researchers attempted to circumvent this problem by investigating the biophysics and bio-mechanics of the natural sensor, and identified modifications that could enable the re-mapping of frequencies where the cochlea malfunctions to neighbouring intact cochlear areas.
According to them, the re-mapping is performed in such a way that no auditory information is lost, and the tuning capabilities of the cochlea can be fully utilized.
The team said that the new findings suggested that biophysically realistic modifications could remedy even substantial hearing loss.
The researchers said that with a recently designed electronic cochlea at hand, the changes in the perception of hearing could be predicted.
The surgical procedures needed to establish the authors' suggested biophysical corrections have not yet been developed.
A research article describing the study, published in the open-access journal PLoS Computational Biology, says that recently developed lasers could play a prominent role in these surgical procedures, similar to their role in correcting deficits for another important human sensor, the eye. (ANI)
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