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Class 9/10
Hearing Sciences
| Question | Answer |
|---|---|
| What is an audiogram? | A graphic representation of pure tone thersholds |
| Why do audiologists test from 250 Hz to 8000 Hz? | Because that comprises the range of speech frequencies within the brain |
| What could happen if you play a tone too loud? | You could hurt them |
| What is a threshold? | the lowest level a patient can hear around 50% of the time |
| What frequency are vowels? | low frequency sounds |
| What frequency are voiceless fricatives? | high frequency sounds |
| Who chose to flip the audiogram? | Harvey Fletcher |
| What is ear canal resonance? | Our ear canal was made to amplify high frequency sounds |
| When can ear canal resonance be a bad thing? | When it is amplifying already high level sounds |
| What are harmonics? | the overtones heard above or below a fundamental frequency |
| What shape marks the left ear on an audiogram? | X |
| What shape marks the right ear on an audiogram? | O |
| What does a graph look like for early noise-induced hearing loss? | a big dip in the graph's line under 20-25 dB HL |
| What is a noise notch? | the dip on an audiogram |
| What does ear canal resonance do when someone is exposed to high level sounds (aircraft, loud music, etc)? | It focuses the damage in the frequency region |
| What frequency is amplified better by a smaller ear canal? | higher frequencies |
| What frequency is amplified better by a larger ear canal? | lower frequencies |
| What does profound noise induced hearing loss look like on an audiogram? | higher left side, then massive drop off on the right side of the graph |
| Which speech sounds are audible on an audiogram? | sounds below the threshold line |
| Which speech sounds are inaudible on an audiogram? | sounds above the threshold line |
| What are the ling 5 sounds? | "ah, oo, ee, sh, s" |
| What do the ling 5 sounds do? | encompass all the range of frequencies of speech |
| Where is part of the ear canal, middle ear, and inner ear located? | within the temporal bone |
| How many major bones does the human skull have? | twenty two |
| How much does an adult head weigh? | 8-12 lbs |
| How much does the skull (without the brain, blood, skin, fat, etc.) weigh? | around 2.2 lbs |
| What are the general dimensions of the skull? | 8" x 8" x 8" |
| What does the temporal bone from? | the sides and base of the skull |
| How many divisions and articulations does the temporal bone have with the skull? | four each |
| What does the term central mean? | related to the brain |
| What does the term peripheral mean? | related to structures which are distal to the brain |
| Where is the occipital bone in terms of the temporal bone? | posterior, at the skull base |
| Where is the parietal bone in terms of the temporal bone? | superior and posterior |
| Where is the sphenoid bone in terms of the temporal bone? | anterior and medial |
| Where is the zygomatic bone in terms of the temporal bone? | anterior |
Created by:
hrshook0104
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