Term
| Automatic or self-recording audiometer |
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Definition
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Term
Bekesy Audiometer:
-developed by Bekesy, in ___
-allows for ___ testing
-also allows for ________ testing
-Jerger classified types of Bekesy ___, 1960 |
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Definition
| 1947; threshold; site-of-lesion; tracings |
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Term
| Bekesy audiometery have what 2 modes of pure-tone presentation? |
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Definition
| continuous (C) and interrupted (I) |
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Term
Bekesy audiometry has 2 tracing modes:
-___ freq: freq changes from 100-10,000 Hz or the reverse
-___ freq: allows any one of a number of freqs to be tested individually (traced for I & C tone) |
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Definition
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Term
| How does Bekesy Audiometry work? |
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Definition
Pt presses button when can hear signal & releases button
when can not hear signal
▶ Signal level varies by pt’s response, so pt controls signal
attenuation
▶ Responses are plotted
▶ Calculate thresholds as midpoint of excursions
▶ Freq sweeps from low to high; can get thresholds at various
freqs
▶ Continuous (C) and interrupted (I) tones are presented
▶ If adaptation occurs, it will affect C tones but not I tones. |
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Term
Bekesy Site of Lesion Test:
I. P & C tracings may overlap; width about 10 dB. This suggests ___, ___, or ___ lesion
II. C falls (< 20 dB) below P around 1kHz. Suggests ___ lesion
III. C falls (> 40 dB) below P tracing. Suggests a ___ lesion.
IV. C falls below P tracing (at freqs less than 1kHz). Suggests a ___ or ___ lesion
V. P falls below C tracing. Suggests ___
[image] |
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Definition
| Normal, CHL, SNHL; cochlear; retrocochlear; cochlear or retrocochlear; pseudohypoacusis |
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Term
| What are some limitations of Bekesy Audiometry? |
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Definition
-not commonly found
-time consuming
-will not quantify thresholds in pts who are malingering |
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