Amplification, Cochlear Implants And Aural Rehab

Front 1

Three Components of Hearing Aides

Back 1

Microphone, Amplifier and Receiver

Front 2

Microphone

Back 2

Sound --> Electrical energy (Capture sound from environment).

Front 3

Amplifier

Back 3

Louder signal

Front 4

Receiver

Back 4

Signal ---> sound energy (Sends amplified signal to ear) like a speaker.

Front 5

Six Components of the CI System

Back 5

External Microphone, Speech Processor, Cord External Transmitter, Internal Receiver and Electrode Array.

Front 6

External Microphone

Back 6

Picks up sounds and speech in the environment.

Front 7

Speech Processor

Back 7

Digitizes and processes the acoustic signal

Front 8

Cord

Back 8

Sends the digitized sound to the external transmitter.

Front 9

External Transmitter

Back 9

The signal is sent across the skin from the external transmitter to the internal receiver.

Front 10

Internal Receiver

Back 10

The Internal receiver stimulates the electrode array

Front 11

Mapping

Back 11

Program in the speech processor that stimulates the electrodes in the individual's cochlea. When appropriately mapped, a cochlear implant recipient's aided thresholds should fall between 20-35 dBHL.

Front 12

What does a Map consist of?

Back 12

Threshold level (lowest level of stimulation that will generate a response) and comfort level (the highest level of stimulation that is comfortably loud).

Front 13

What is ALD?

Back 13

Assistive Listening Device

Front 14

Benefits of ALDs

Back 14

Acoustic advantage, distance from speaker to listener is not an issue, mobility, and can be used with or without personal hearing aides.

Front 15

Four types of ALDs

Back 15

Personal, Sound-field, Infrared, and Induction Loop System

Front 16

Personal FM

Back 16

Wireless, portable, speaker wears microphone connected to body worn transmitter.

Front 17

Personal FM Advantages/Disadvantages

Back 17

Advantages: Portable, flexible, use indoor or outdoor, appropriate for mild to profound HL, good signal strength.

Disadvantages: Receivers are required for everyone, receivers vary in quality, potential for outside interference.

Front 18

Sound-field FM Systems

Back 18

Similar to personal FM, amplification comes from loudspeaker, system has microphone/fm transmitter, speakers

Front 19

Infrared Systems

Back 19

Uses infrared light, transmitter emitter panel like a diode on a remote

Front 20

Infrared System Advantages/Disadvantages

Back 20

Advantages: Compatible, can be used in adjacent rooms, best quality, good for mild to moderate severe HL, not affected by radio transmission.

Disadvantages: Everyone needs a receiver, requires direct line of sight, indoor or evening use only, large area require multiple emitter panels, quality varies

Front 21

Induction Loops Systems

Back 21

Transmits electromagnetic waves, hearing aid telecoil or desktop unit receives signal, loop encircles the room or localized to a specific area like a chair or around neck.

Front 22

Loop System Advantages/Disadvantages

Back 22

Advantages: Low equipment costs, easy operation, lasts forever, induction receiver is universally compatible, works with T-coil hearing aide.

Disadvantages: Interference from wiring and florescent lighting, spillover outside of loop area, strength can vary, room size restrictions

Front 23

What are some listening environment strategies to help with acoustic hearing?

Back 23

Rearrange furniture for conversation, change lighting to see faces, decrease the noise and reverberation, and decrease distance from speaker.