Term
| What did Bartolomeo Eustachius do? |
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Definition
| His greatest work was anatomical engravings. He discovered the stapes and describes the tensor tympani. Established chorda tympani as branch of facial nerve. Also discribed the Eustachian tube |
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Term
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Definition
| Described aortic sinuses. Coined the term eustachian tube. Associated with valsalva maneuver which tests eustachian tube function and circulatory function |
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Term
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Definition
| the first immittance equipment |
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Term
-1940s: ___ Invented the First Immittance Equipment
-Published landmark study in ___; first to test immittance in normal & pathologic ears
-Saw that pressure changes affected ___ ___ measures
-Studied ___ ___
-Saw need for desktop equipment with a ___ ___ |
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Definition
| Metz; 1946; ME; acoustic reflexes; pressure pump |
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Term
1950s & 60s: Early Instrumentation:
-___ , Terkildsen & Nielson developed prototype
-___, Terkildsen & Thomsen used 1st commercially available equipment
-1963, Madsen ZO70 had arbitrary “____ ___”
-Implication: Could not determine norms since arbitrary units could not be ___ or ___ |
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Definition
| 1957; 1959; compliance units; averaged; compared |
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Term
GSI 1720:
-Used ___ Hz, ___ Hz, & 1000 Hz probe tones
-Measured ___, rather than impedance
-Instead of calibration in arbitrary “compliance units”; could be calibrated in ___
-Implication: Allowed response of the ear canal alone to be subtracted from total ___ |
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Definition
| 220; 678; admittance; millimhos; immittance |
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Term
Tympanogram Shapes:
-Liden, ___, published tympanogram typing system
based on shape
-Jerger, ___, built on Liden’s work & classified tymps
based on shape |
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Definition
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Term
Acoustic Reflexes – Evolution of Animal & Human Research:
-___s: Henson saw ASR (dogs)
-___: Kato saw stapedius muscle contract to sound (monkeys)
-___: Luscher first to see ASR in humans
-___: Hallpike reviewed animal studies (cats and rabbits); cont. debate TT or stapedius?
-___: Metz measured ASR in humans |
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Definition
| 1870; 1913; 1929; 1935; 1946 |
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Term
| test of middle ear function; measures sound energy absorbed by the middle ear relative to pressure varied in the ear canal |
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Definition
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Term
| contraction of the stapedial muscle, evoked by sounds, & measured as changes in admittance in the ear canal |
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Definition
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Term
Tympanometry:
-Amount of ___ admitted into middle ear, as air ___ is changed
-When air pressure is applied, the TM & ossicles become ___ - which ___ absorption of sound energy
-Peak shows ___ flow of energy |
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Definition
| energy; pressure; stiffened; decreases; maximum |
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