Cochlear implants translate frequency bands into place-coded stimulation along the cochlea

Evidence

A cochlear implant is a device that picks up incoming sound with a microphone, filters it into different frequency bands, and presents the appropriate frequency band to the appropriate place along the cochlea (see Section 2.1.3). The implant consists of an electrode array with its driving electronics and a receiver coil that is implanted behind the ear under the skin and an external behind-the-ear processing unit that includes a microphone, speech processor and a transmission coil that couples magnetically to the internal receiver coil. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2683

A cochlear implant is a device that picks up incoming sound with a microphone, filters it into different frequency bands, and presents the appropriate frequency band to the appropriate place along the cochlea (see Section 2.1.3). The implant consists of an electrode array with its driving electronics and a receiver coil that is implanted behind the ear under the skin and an external behind-the-ear processing unit that includes a microphone, speech processor and a transmission coil that couples magnetically to the internal receiver coil. The electrode array is designed to be very flexible such that it can be pushed into the cochlea via the scala tympani (see Figure 2.3) close to the round window (see Figure 2.1). — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2683

Categorization

• DEFINE: Explains what a cochlear implant physically is and its place-coding principle.
• XREF: Directly instantiates the tonotopic place theory laid out in the book’s early sections on cochlear mechanics (Section 2.1.3).
• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2683