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| According to Van Tasell, a hearing loss of cochlear origin with air-conduction thresholds less than ____dbHL,is consistent with damage to the outer hair cells. |
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| Which of the following is NOT considered a significant perceptual consequence of mild/moderate hearing loss: a)change in the width of auditory fibers b) change in the growth of loudness c) change in temporal resolution |
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Definition
| c) change in temporal resolution |
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Term
| Which acoustical/informational characteristic of speech is more important for intelligibility: temporal or spectral? |
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Term
| For contextually rich speech material (continuous discourse), 100% correct speech recognition performance can be achieved with an Articulation Index (AI) as low as what? |
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Term
| Quality control, physical fit, and performance comprise what stage of the hearing aid fitting process? |
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Term
| What is the primary and perferred method of verifying the performance of hearing aids? |
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Term
| Which validation measure helps the patient determine specific communication settings in evaluating aided goals and performance? |
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Term
| Which speech recognition test under what conditions would most likely be the best predictor of real-world speech understanding in noise? |
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Term
| What type of audiometric data requires the fewest number of conversions to derive real-ear fitting targets? |
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Definition
| thresholds in dB SPL measured at the eardrum |
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Term
| Different gain prescriptions have been shown to produce significant differences in intelligibility. T/F |
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Definition
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Term
| If verification findings are excellent, validation of the fitting does not need to occur. T/F |
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Term
| For individuals with SNHL, aided and unaided speech understanding deficits in noise are likely due to a combination of inaudibility & suprathreshold deficits. T/F |
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Term
| Due to their smaller ear canals, all other things being equal, the output measured in a child's ear canal while wearing a hearing aid is likely higher than that measured in an adult's. T/F |
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Definition
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Term
| Linear processing is always used in conventional hearing aids. T/F |
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Definition
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Term
| With linear processing, peak clipping is always used for output limiting. T/F |
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Definition
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Term
| What measures can be used to help "customize" a hearing aid prescription? |
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Definition
| REDD, RECD, Thresholds in real-ear dB SPL, REUR |
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Term
| Describe the Coupler Response for FLat Insertion Gain (CORFIG) |
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Definition
| 1)can be applied to real-ear insertion gain targets to determine individual-specific coupler targets 2)requires incorporation of a correction factor baed on hearing aid style 3)requires RECD data in order to be calculated 4) accounts for an individual's REUR |
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Term
| What are the advantages of binaural hearing aid fitting (assuming bilateral, symmetric hearing loss? |
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Definition
| 1)better performance in noise 2)improved localization 3) less potential for auditory deprivation |
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Term
| What determines whether linear or WDRC processing will be used? |
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Definition
| type and degree of hearing loss |
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Term
| NAL-R is an appropriate fitting strategy for a hearing aid incorporating WDRC processing. T/F |
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Definition
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Term
| There is sufficient eveidence to suggest that one particular prescriptive strategy in superior to others for most patients. T/F |
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Definition
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Term
| Part of the loudness equalization rationale is to normalize overall loudness while equalizing loudness across frequency bands. T/F |
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Definition
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Term
| If the manufacturer provides a proprietary fitting strategy for a given device, use of a device independent strategy should not be considered. T/F |
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Definition
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Term
| The hearing aid prescription that generates the highest predicted speech intelligibility, as determined via the articulation index, always yields the highest speech intelligibility and sound quality. T/F |
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Definition
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Term
| Fitting strategies based on a loudness normalization rationale have been shown to provide the highest sound quality in most environments. T.F |
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Definition
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Term
| If performed appropriately and consistently, loudness scaling tasks are reliable. T.F |
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Definition
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Term
| For probe microphone and test box measures, signal choice can have an impact on aided output. T.F |
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Definition
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Term
| To determine a multichannel hearing aid's maximum output at any given frequency, a 90dB speech input should be used. T/F |
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Definition
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Term
| The noise reduction algorithm should never be turned off during ANSI measurements. T/F |
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Definition
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Term
| As long as the equalization data is stored, the patient can move during real-ear testing. T/F |
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Definition
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Term
| The depth of the probe microphone in the ear canal can impact both unaided and aided output. T/F |
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Definition
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Term
| The AV subscale score on the APHAB typically improves significantly after fitting. T/F |
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Definition
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Term
| Which prescriptive strategy incorporates a hearing loss "desnesitization" factor? |
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Definition
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Term
| What type of test signal should be used to minimize the effect of a noise reduction algorithm during verfication? |
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Definition
| It should have speech-like temporal and spectral characteristics |
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Term
| What is one important reason to obtain verification using real-ear insertion gain? |
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Definition
| It can help account for an unusual REUR |
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Term
| Name 4 device-independent fitting strategies. |
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Definition
| DSL[i/o], NAL-R, NAL-NL1, FIG6 |
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Term
| What form can targets provided by fitting strategies be shown? (3 answers) |
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Definition
| 1)real-ear insertion gain 2)real-ear aided gain 3)aided sound field thresholds |
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Term
| What four factors can have an impact on the output measured from a hearing aid in the test box or on a patient's ear? |
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Definition
| length of release time, number of channels, digital noise reductin, test signal |
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