L12 Hearing Impaired

Question 1

Hearing Impairment

Answer 1

an impairment in hearing, whether permanent or fluctuating, that adversely
affects a child’s educational performance but is not included under the definition
of ‘deafness.’

Question 2

deafness

Answer 2

A hearing loss above 90 decibels

Question 3

Devices for Hearing Impaired

Answer 3

• Home considerations
• Assistive listening devices: (ALDs); amplify the sounds you want to hear
• Hearing aids: help wearer hear certain sounds better amplify sounds that may be detected by damaged ear
• Cochlear implant: bypass damaged portions of the ear and directly stimulate the auditory nerve.
• Translators: human or technology

Question 4

Hearing Impaired: Home Considerations

Answer 4

• Doorbell, smoke alarms: strobe or vibration system
• Bed shaker, vibrating pillow
• Outdoor motion sensing lights: alert movement
• Personal pagers: used by relatives/friends to get attention of person with hearing impairment

Question 5

Cochlear Implant

Answer 5

• an external portion that sits behind the ear
• a second portion that is surgically placed under the skin
• does not restore normal hearing
• gives a deaf person a useful representation of sounds in the environment and help him or her to understand speech

An implant has the following parts:
* A microphone, which picks up sound from the environment.
* A speech processor, which selects and arranges sounds picked up by the microphone.
* A transmitter and receiver/stimulator, which receive signals from the speech processor and convert them into electric impulses.
* An electrode array, which is a group of electrodes that collects the impulses from the stimulator and sends them to different regions of the auditory nerve.