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Chapter 2: Hearing Aids and Hearing  Assistive Technologies

  • Introduction

    • History of Amplification

  • Hearing Aid Components

    • Microphone​

    • Amplifier (digital processor)

    • Receiver

    • Battery

  • Hearing Aids Styles

    • Behind-the-ear​

    • Receiver-in-the canal

    • In-the-ear/In-the-canal/Completely-in-the-canal

    • Extended-wear Hearing Aids

  • The Earmold

  • Who is a Hearing Aid Candidate

    • Degree of Hearing Loss​

    • Degree of Communication Disability

    • Motivation to Use Amplification

  • Hearing Aid Fitting Protocol

    • Selection​

    • Quality Control

    • Fitting

    • Hearing Aid Orientation

    • Verification/Validation/Outcome Measures

  • Pediatric Fittings

  • Special Fittings

    • Contralateral Routing of Signal (CROS) Fittings​

    • Bone-conduction Hearing Aids

    • Bone-anchored Devices

    • Middle Ear Implantable Hearing Aids

  • Cochlear and Brainstem Implants​

  • Hearing Assitive Technology or When a Hearing Aid May Not Be Enough

    • Types of Assistive Devices​

    • The Role of the Audiologist in Assistive Listening/Hearing Technologies

    • Verifying and Validating the Fitting of HATS

  • The Bottom Line: Cost Management and Payment of Hearing Aids and HATS​

Supplemental Learning Activities

Supplemental Learning Activities

  • Hearing Loss Experience – Short video on how simulate a hearing loss using earplugs

  • Hearing Aid Experience – Short video on how to set up a hearing aid to wear as a means of gaining some experience with amplification

  • Gathering Information about Hearing Aids/HATS: The student accesses one website for a major hearing aid manufacturer and gathers information regard- ing the contents of that site (hearing aid models, features of each, etc.) and may be assigned to write a brief one- to two-page summary. The student could do the same thing for a major manufacturer/distributor of HATS.

  • Make arrangements with the Audiology Clinic at their university to observe a clinical activity involving hearing aids (hearing aid selection, hearing aid fitting/verification, hearing aid orientation, etc.). Note the processes used and the outcome.

Web Resources

​Bone Conduction Technology

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Middle Ear Implants​

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Computerized Self-Assessment Inventories 

 

Pre-selection Measurements 

 

Assistive Listening Devices

Websites

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