Term
-In the 19th century, the main need for hearing tests was to determine whether or not a patient had a ___ ___, and in which ear was more ___.
-What was treatment like at this time? |
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Definition
hearing loss; severe;
-From a medical or surgical point of view there was little that could be done to overcome any hearing loss and little was known about hearing aids. |
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Term
| Good ___ was more important in the 19th century than audiometry due to infections |
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Definition
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Term
| What was the earliest hearing test based on? |
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Definition
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Term
-What was click stimuli originally produced by?
-Later, what was used to produce a graduated impulsive stimulus? |
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Definition
| watches; pendular hammer striking a resonating object |
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Term
| What was the most popular click stimulus device? |
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Definition
| A small hand-held click-generating acoumeter developed by Politzer in 1877 |
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Term
| The value of testing auditory acuity at different frequencies dates back to the work of ___, in ___, who showed that certain hearing impaired individuals had deficiencies at low frequencies and others at high frequencies. |
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Definition
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Term
| What instrument was widely used in the 19th and early 20th century to perform tonal audiometry? |
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Definition
| Tuning forks set in motion by a hammer [image] |
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Term
| Who was the first induction coil audiometer invented by in 1878? |
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Definition
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Term
| The basic principle of most of the early audiometers was that of two electrical circuits linked by an ___ ___. The primary circuit consisted of a ___, an ___ and primary windings of the ___ ___. The secondary circuit consisted of the ___ windings of the induction coil and the ___ |
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Definition
| induction coil; battery; interrupter; induction coil; secondary; telephone |
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Term
| Who gave the audiometer it's name? |
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Definition
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Term
Useds advocated for early audiometers:
1. Measuring the ___ of hearing loss and ___ the 2 ears
2. Tracing the ___ in hearing during the course of disease
3. Examining the effects of ___ on hearing
4. Examining the effect of ___ intervention on hearing
5. Screening hearing in occupations requiring ___ hearing
6. Examining the ___ effect on hearing
7. Use in evaluation of ___ to hearing |
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Definition
| degree; comparing; changes; drugs; surgical; acute; age; aids |
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Term
| Screening audiometry attained no real acceptance until the development of the Western Electric 4A gramophone audiometer for screening large groups of children in ___ by ___ and ___, and the application of pure-tone audiometry for testing the military began seriously on during and after ___ ______ |
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Definition
| 1926; Fowler and Fletcher; World War 2 |
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