You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who developed and commercialised the modern multichannel cochlear implant (bionic ear)?" whose answer is Erwin Hochmair.
Each document should contain about 30 words, and these documents should contain useful information.

Query: development and commercialization of modern multichannel cochlear implant
Useful Output:

Doc 1: The demand for multichannel cochlear implants has been steadily increasing due to the growing awareness and advancements in hearing loss
Doc 2: We critically review the progress in CI research, and its success in improving patient outcomes, from the turn of the century to the present day.
Doc 3: Keppeler et al. developed multichannel LED cochlear implants that use optogenetics to stimulate spiral ganglion neurons. Testing in rats and
Doc 4: Australia has been at the forefront of innovation in cochlear implants since 1975. Professor Graeme Clark and his team implanted the first cochlear implant.
Doc 5: The cochlear implant (CI) is the most successful sensory prosthetic device to date, yielding significant improvements in speech understanding (