Hearing Impairment - Causes and communication

Girija. A2nd SemesterB.Ed., ASE 1

CAUSES FOR HEARING IMPAIRMENT

“ HEARING IMPIRMENT is not only the handicap of not being able to hear. It encompasses emotional problems, problems of socialization , and even in hearing” According to Helen Killer“The problems of deafness are deeper and more complex. It is a much worse misfortune for it means the loss of the most vital stimulus, the sound or voice that brings language, sets thoughts and keeps us in the company of man.”

“ HEARING IMPIRMENT is not only the handicap of not being able to hear. It encompasses emotional problems, problems of socialization , and even in hearing” According to Helen Killer“The problems of deafness are deeper and more complex. It is a much worse misfortune for it means the loss of the most vital stimulus, the sound or voice that brings language, sets thoughts and keeps us in the company of man.”

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DEGREES OF DEAFNESS

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FREQUENCY Vs DECIBLES

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CLASSIFICATION OF HEARING IMPAIRED

1. According to the age at onset of deafness - congenitally deaf- born deaf - Adventitiously deaf- Born with normal hearing and became deaf later2. According to language development - prelingually deaf- born deaf or lost speech before speech develops- Post lingually deaf- Lst speech after deve;p[ment of speech and language3 According to the place of impairment - Conductive hearing loss-It is due to the interference in the transmission of sound to and through the sense organ(outer or middle ear) -Sensironeural hearing loss- Due to the abnormality of the inner yearMixed hearing loss- Combination of both

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Parts of an Ear

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MATERNAL FACTORS

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Drugs during pregnancy

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NATAL CAUSES

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ACOUSTIC NEUROMA- a non cancerous tumour in the outer earcauses vertigo, tinnitus etcOTOSCLEROSIS- Building up of a spongy bone like tissue in the middle earOTITIS MEDIA- Inflammation of the middle earit is due to bacterial or viral infectionsprimarily occurs in the child hoodCERUMEN- It is block in the ear canal and adhers to the eardrum(ear wax)Perforation to the ear drum

Conductive hearing loss- causes

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PROBLEMS OF INNER EAR

• MENIERE’s disease

A part of cochlea swells, results in lack of balance

• MENINGITIS- inflammation of the layers of the

brain

• HEREDITY

• PRE-NATAL INFECTIONS OF MOTHER

• VIRAL AND BACTERIAL INFECITONS

• DRUGS

• UNWANTED NOISES15

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American Sign language (ASL) American Sign language (ASL)

ALPHABET

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NUMBERS

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1. GREETINGS

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3. Hand Shape

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5. Vocabulary

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Thank you

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