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PediatricAudiometry2
Pediatric Audiology - Physiological Tests
| Question | Answer |
|---|---|
| Advantages of physiological measures | do not require the child's cooperation; allow testing of each ear individually; directly access the physiological integrity of the lower portions of the auditory system |
| Physiological Tests | 1. Otoacoustic emissions, 2. Auditory Brainstem Response, 3. Acoustic Immittance |
| OAE | Otoacoustic emissions |
| ABR | Auditory Brainstem Response |
| Otoacoustic emissions - two types | 1. Spontaneous (SOAE), 2. Evoked (EOAE) |
| Three Types of Evoked Otoacoustic emissions | 1. Transient-evoked (TEOAE), 2. Distortion-product (DPOAE), 3. Stimulus-frequency (SFOAE) |
| Spontaneous otoacoustic emission | sound that gets transmitted from the cochlea without external stimulus |
| Evoked otoacoustic emission | send signal to inner ear, outer hair cells of the cochlea send back an echo |
| BAEP, BAER, BSER | other acronyms for ABR |
| auditory evoked potentials | change in activity; measure of electrical activity coursing through the auditory pathway; records stimulus evoked voltage changes of the auditory nerve, brainstem, and cortex |
| ABR: 0 - 2 msec | EcochG or Ecog: electrocohleogram |
| ABR: 2 - 10 msec | ABR: Auditory Brainstem Response |
| ABR: 10 -50 msec | MLR: Middle Latency Response |
| ABR: 50 - 250 msec | LLR or LER: Late Latency Response |
| ABR: 300 msec | Auditory event - primary and secondary areas of the cerebral cortex |
| Pediatric SRT | use pictures of spondee words, children point to words when presented; must ensure that all words are part of the child's vocabulary |
| Monosyllabic, Trochee, Spondee (MTS); Early Speech Perception (ESP) Test; Minimal Auditory Capabilities (MAC) Battery; Glendonald Auditory Screening Procedure (GASP); Test of Auditory Comp. (TAC) | test for profoundly deaf children |