Spring, 2010Maura McGuire Access Success Module 1 Understanding one’s hearing loss

Spring, 2010Maura 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, 2010Maura McGuire Now Hear This Take the pretest on Quia rand= http:// rand= Watch video: Now Hear This ( ) Discuss video Review slides Take posttest on Quia.

Spring, 2010Maura McGuire Now Hear This Functions of the ear: Balance Hearing Major Part of the ear Outer ear Middle ear Inner ear Outer Ear Pinna Ear canal Eardrum Middle Ear Hammer, Anvil, Stapes Oval Window Eustachian tubes Inner Ear Cochlea –Organ of Corti Auditory nerve Brain Balance organs –Semi circular canals

Spring, 2010Maura McGuire Outer Ear PartFunction 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, 2010Maura McGuire Middle Ear PartFunction Middle EarFilled 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, 2010Maura McGuire Inner Ear PartFunction CochleaSize 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 BrainCentral computer to interpret sound messages from the cochlea

Spring, 2010Maura McGuire Reading an Audiogram

Spring, 2010Maura McGuire Pretest Go to Quia site: Reading an Audiogram Complete the pretest

Spring, 2010Maura 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, 2010Maura McGuire

Spring, 2010Maura McGuire

Spring, 2010Maura McGuire Chart Your Thresholds Audiogram date ______________ 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Right Ear Left Ear FM

Spring, 2010Maura 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, 2010Maura McGuire Post test Go back to the Quia site Reading an Audiogram Complete the post test

Spring, 2010Maura 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)