Term
| first to report vestibular responses to sound in normal human subjects and prove they were not mediated by the cochlea. Also described small head movements toward the stimulated ear following high-level (122-134 dB SPL) 1000 Hz tones and suggested may be result of otolith organ stimulation |
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Definition
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Term
People who discovered:
-First electrical responses to sound from the vestibular system recorded
-Responses improved be fenestration of SCC |
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Definition
| De Vries and Bleeker 1949 |
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Term
People who studied:
-Recorded frequency following responds (FFR) and middle latency response (MLR) from deaf subjects with normal vestibular function, and showed absent FFR and MLR in deaf subjects with hypovestibular function
-Improved recordings following fenestration of SCC |
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Definition
| Ribaric and colleagues 1980s |
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Term
| List the two main types of vestibular responses which are measured using electrophysiology |
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Definition
| Compound action potentials generated by the peripheral vestibular system and its central pathway. Elicited by head motion/vestibular stimulation |
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Term
| Identify what type of neuron is measured during VsER |
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Definition
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Term
| Discuss why vestibular evoked responses are not used clinically at this time |
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Definition
| There is no standard protocol and there are inconsistent results in human studies |
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Term
| List three subject variables which influence the vestibular evoked response |
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Definition
| Core temperature, level of anesthesia, and age |
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Term
| Identify what type of neuron is being measured during VEMP testing |
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Definition
| Motor output responses elicited by intense sound presented to the ear |
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Term
| Absence or thinning of the temporal bone between the apex of the SCC and the middle cranial fossa |
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Definition
| Semicircular Canal Dehiscence |
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Term
| List two methods of eliciting the cVEMP response |
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Definition
| A tone or tap on the head |
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Term
Response of the cVemp and oVEMP:
-cVEMP: Recording from the ___ muscle primarily gives us information
-oVEMP: Information recorded from the ___ muscles primarily gives us information from from the saccule the utricle. Smaller magnitude of cVEMP; requires ___ amplification of the signal being recorded |
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Definition
| sternocleidomastoid; ocular; more |
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Term
when the oVEMP peak occurs and the oVEMP negative deflection occurs:
-Negative peak followed by a ___ peak
-Negative peak occurs at about ___ msec
-Positive peak occurs at about ___ msec |
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Definition
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