spring, 2010maura mcguire access success module 1 understanding one’s hearing loss
TRANSCRIPT
Spring, 2010 Maura McGuire
Access Success
Module 1Understanding one’s hearing loss
Spring, 2010 Maura McGuire
Objectives
– Demonstrate understanding of the science of sound and the ear
– Learn to read one’s audiogram– Explain the audiogram– Explain its’ impact on one’s access
to education
Spring, 2010 Maura McGuire
Now Hear This• Take the pretest on Quia• http://www.quia.com/jq/65203.html?AP_ra
nd=617723340
• Watch video: Now Hear This (www.dcmp.org )
• Discuss video • Review slides• Take posttest on Quia.
Spring, 2010 Maura McGuire
Now Hear This
Functions of the ear:• Balance• HearingMajor Part of the ear• Outer ear• Middle ear• Inner earOuter Ear• Pinna• Ear canal• Eardrum
Middle Ear• Hammer, Anvil, Stapes• Oval Window• Eustachian tubesInner Ear• Cochlea
– Organ of Corti
• Auditory nerve• Brain• Balance organs
– Semi circular canals
Spring, 2010 Maura McGuire
Outer EarPart Function
Pinna (auricle) Bring sound into ear and locate sound
Ear canal (external auditory meatus)
Has hairs and wax to keep out dirt and insects
Eardrum (tympanic membrane)
Membrane which is stretched tightly across the ear canal and vibrates when sound hits it.
Spring, 2010 Maura McGuire
Middle EarPart Function
Middle Ear Filled with air
Contains 3 smallest bones in the body: hammer, anvil, stirrup
Malleus, Incus, Stapes
Also known as:
Hammer, anvil, stirrup – smallest bones that vibrate sound
Stapedes Muscle
Pulls bones apart ot keep them from breaking with loud sounds.
Eustachian tube
Helps equalize air pressure and drain mucus
Spring, 2010 Maura McGuire
Inner EarPart FunctionCochlea Size of a pea
Organ of Corti
Hair cells like a pipe organ to send an electrical pitch and loudness info to the auditory nerve
Semi Circular Canals
Organs of balance
Auditory Nerve
Pathway for sound to the brain
Brain Central computer to interpret sound messages from the cochlea
Spring, 2010 Maura McGuire
Reading an Audiogram
Spring, 2010 Maura McGuire
Pretest
• Go to Quia site: Reading an Audiogramhttp://www.quia.com/quiz/1190683.html
• Complete the pretest
Spring, 2010 Maura McGuire
Audiogram Vocabulary
• Audiogram• Hertz• Decibels• Unilateral• Bilateral• Mild• Moderate• Severe• Profound
• Conductive• Sensorineural• Mixed Hearing Loss• Speech discrimination• Speech Reception
Threshold (SRT)• Threshold
Spring, 2010 Maura McGuire
Spring, 2010 Maura McGuire
Spring, 2010 Maura McGuire
Chart Your Thresholds
• Audiogram date ______________
250 Hz 500 Hz 1000 Hz
2000 Hz
4000 Hz
8000 Hz
Right Ear
Left
Ear
FM
Spring, 2010 Maura McGuire
Describe your hearing loss• My loss is described as:
(mild, moderate, severe, profound)(unilateral, bilateral)(conductive, sensorineural, mixed)
• The amount of hearing loss in my right and left ears is: The same/different – (Which ear is better?)
• I get approximately ____ dB benefit from my hearing aids/CI and _______ db benefit from FM amplification.
• My speech discrimination scores are: • right_____ % correct with amplification• Left _____% correct with amplification
My speech discrimination ability could be described as: excellent, good, fair, or poor
Spring, 2010 Maura McGuire
Post test
• Go back to the Quia site
• Reading an Audiogramhttp://www.quia.com/quiz/1190683.html
• Complete the post test
Spring, 2010 Maura McGuire
Explain your hearing loss
• Turn to the person to your right and explain your hearing loss to them. Be sure to include: – Degree of loss– # impacted ears– Type of loss– As well as what that
means to you (what you can/can’t hear)