hearing impairment

Topics: Ear, Auditory system, Sensorineural hearing loss Pages: 5 (644 words) Published: August 18, 2014
HEARING IMPAIRMENT

Prepared by:
Heralyn Tabada Alberca
BEED II-3
HEARING IMPAIRMENT
Hearing Impairment
-the hearing loss that adversely affects educational performance and thereby makes the child eligible for Special Education. (IDEA) Hearing Loss
-a degree of hearing loss on a continuum for mild to profound. Hard of Hearing
-is a her\aring loss that makes it difficult but not impossible to understand speech through the ear alone, with or without hearing aid. Deaf
-an individual who is not able to use hearing to understand speech. Decibels
-measurement of the intensity or loudness of sound.
Age of Onset
Congental
Acquired
Causes of Hearing Impairment
1. Genetics
2. Developmental Abnormalities
3. Toxic reaction to drugs
4. Prematurity
5. Rh incompatibility
6. Birth Trauma
7. Allergies

Types of Hearing Impairment
1. Conductive Hearing Loss- Mild loss in both ears
2. Unilateral Hearing Loss- loss in only one ear
3. Mild Bilateral Sensorineural Hearing Loss- caused by sound not being transmitted to the brain 4. Moderate to Severe Bilateral Sensorineural Hearing Loss- more severe loss in both ears.

Characteristics of Children with Hearing Impairment
Psychological Features
Intellectual ability range similar to hearing peers
Problems with certain conceptualization
Communication
Poor speech production
Limited vocabulary
Problems with language usaged comprehension especially abstract topics Voice quality problems
Socio-Emotional
Socially immature
Difficulty in making friends
Dependent on teacher’s assistance
Academic
Spelling problems
Limited written language production
Reading ability most significantly affected
STRATEGIES FOR INSTRUCTION
Oral/Aural Approach
Auditory training
Speech reading
Technological Aids
Amplification

EDUCATIONAL PLACEMENT
Special Class
Self- Contained Class
Inclusive Setting
TECHNOLOGIES THAT AMPLIFIES SOUND
Hearing Aid
Assistive Listening Devices
Example: radio link
Cochlear Implants

NORMAL HEARING
The ear is divided into the outer ear, middle and inner ear. The outer ear consists of external ear (auricle) and the auditory canal (external acoustic meatus). The middle ear is composed of the eardrum (tympanic membrane) and three small bones called hammer (malleus), anvil (incus) and stirrup (stapes). Together these bones are also called Ossicles or Ossicular Chain. The Eustachian Tube extends from the back of the throat to the middle ear, opens and closes to equalize the air pressure on both sides of eardrum. The inner ears is composed of cochlea which controls our sense of hearing and semicircular canals which control our sense of balance and the beginning of the auditory nerve. FEDERAL GUIDELINES

The Individuals with Disabilities Education Act (IDEA) defines deafness as a hearing impairment that is so severe that the child is impaired in processing linguistic information through hearing with or without amplification FIVE SEVERITY CATEGORIES OF HEARING IMPAIRMENT

A person with normal hearing will hear sounds between 0 and 20 decibels with little difficulty and have no difficulty hearing in any conversational setting. SLIGHT HEARING LOSS- a person with slight hearing loss will hear sounds at an intensity of 20 to 40 decibels or louder, may have difficulty with faint speech. MILD HEARING LOSS- a person with mild hearing loss will not hear sounds of an intensity of 40 to 60 decibels and can usually understands fce to face conversations. MODERATE HEARING LOSS- a person with moderate hearing loss cannot hear sounds less intense than 60 to 75 decibels. SEVERE HEARING LOSS- a person with severe hearing loss cannot hear sounds below 75 to 90 decibels. PROFOUND HEARING LOSS- a person with profound hearing loss cannot hear conversational speech TYPES OF HEARING LOSS

Conductive
Sensorineural
Central Auditory Processing Dysfunction
Mixed Hearing Loss
PREVALENT CAUSES OF PRELINGUAL HEARING LOSS
Maternal Rubella...
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