Assessment of hearing threshold in adults with hearing loss using an automated system of cortical auditory evoked potential detection

Durante, Alessandra Spada; Wieselberg, Margarita Bernal; Roque, Nayara Michelle Costa de Freitas; Carvalho, Sheila; Pucci, Beatriz; Gudayol, Nicolly; Almeida, Kátia de

doi:10.1016/j.bjorl.2016.02.016

Cited by 10 publications

(23 citation statements)

References 24 publications

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“…The exception in the present study was the fact that CATE thresholds at 2000 Hz were, on average, 9.5 dB better than the behavioural thresholds at that frequency. This is not consistent with the studies by Durante et al (2016) and Van Dun et al 2015, who used the HEARLab® in typical adults and older adults and found cortical thresholds were worse than behavioural thresholds at all frequencies.…”

Section: Resultscontrasting

confidence: 92%

“…Overall, the correlations found in this study between CATE and PTA are similar to other studies that have used AEPs with adults who do not have a cognitive impairment (Durante et al, 2016;Lightfoot & Kennedy, 2006;Tsui, Wong, & Wong, 2002;Van Dun, Dillon, & Seeto, 2015). Typically, after applying correction factors, cortical thresholds are within 10 dB of behavioural thresholds across all frequencies and the trend is for cortical thresholds to be slightly worse than behavioural thresholds.…”

Section: Resultssupporting

confidence: 85%

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Optimising hearing services for adults living with dementia and hearing impairment in residential aged care facilities

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Section: Resultscontrasting

confidence: 92%

Section: Resultssupporting

confidence: 85%

Optimising hearing services for adults living with dementia and hearing impairment in residential aged care facilities

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“…Further tests have shown that both the amplitude and latency of the P1 CAEP component were correlated with speech perception in adults and children 5 , 8 – 10 . Beyond the examination of functional hearing in healthy subjects, CAEPs have also been used to assess hearing loss 11 and the function of cochlear implants and hearing aids. Recent research suggests that CAEPs may further serve as objective tools to aid in the assessment and programming of Cochlear implants 12 , with later experiments revealing correlations between CAEP scores and Mandarin Early Speech Perception tests in children after cochlear implantation surgery 13 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of Volume-Based Changes in Cortical Auditory Evoked Potentials and Prepulse Inhibition

Potter

Nguyen

et al. 2017

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The auditory evoked startle reflex is a conserved response resulting in neurological and motor activity. The presence of a mild prepulse immediately before the main pulse inhibits startle responses, though the mechanism for this remains unknown. In this study, the electroencephalography (EEG) data recorded from 15 subjects was analyzed to study the N1 and P2 components of cortical auditory evoked potentials (CAEPs) evoked by 70, 80, 90, 100, and 110 dB stimuli both in the presence and absence of 70 dB prepulses. Results without a prepulse showed an evolution of N1 amplitudes, increasing with stimulus intensity and showing largely significant differences. Results from prepulse trials only showed noteworthy changes in peak-to-peak amplitude in the 100 dB condition. Prepulse and non-prepulse conditions were then compared using peak amplitudes and theta power. Prepulse conditions significantly decreased the amplitude for both components in the 110 dB condition, i.e., pre-pulse inhibition, but significantly increased the N1 amplitude in the 70 dB condition, i.e., pre-pulse facilitation. Similarly theta band power significantly increased in the 70 dB prepulse condition and significantly decreased in the 110 dB prepulse condition. These results expand the basis of knowledge regarding how CAEPs change and elaborate on their neural function and representation.

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“…CAEPs have advantages over other electrophysiological measures, such as auditory brainstem responses (ABRs) and auditory steady-state responses (ASSRs). First, the CAEP is a measure of cortical function, whereas the ABR and high modulation ASSR only provide information at the brainstem [1,2]. Second, the amplitude of CAEPs is larger than the ABR and ASSR by about 5 to 10 µV because CAEPs occur closer to the electrodes [3].…”

Section: Introductionmentioning

confidence: 99%

“…The CAEP is affected by the patient's state of arousal, so drowsiness and sleep can affect the responses [13]. The CAEP latency, amplitude, and morphology can vary across age, individuals, and even from time to time within the same person [1]. Other drawbacks include the long time that CAEPs take with standard evoked potential software [4], the high cost of equipment [14], and the absence of a user-friendly system designed for routine clinical practice; all have hindered the regular use of CAEPs [15].…”

Section: Introductionmentioning

confidence: 99%

The Hearlab Cortical Tone Evaluation (Cte) Protocol: A Clinical Feasibility Study

et al. 2016

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Background: Cortical auditory evoked potentials (CAEPs) have been shown to demonstrate high correlations with pure-tone behavioral thresholds when using research protocols. However, experience using the HEARLab cortical tone evaluation (CTE) procedure clinically in sites independent of the National Acoustic Laboratories (NAL) remains limited. This study aimed to assess the clinical feasibility of the CTE protocol using the HEARLab system to estimate pure-tone behavioral thresholds at 500, 1000, 2000, and 4000 Hz. Material and methods:This is a preliminary prospective study designed to compare behavioral hearing thresholds with air conduction CTE of 12 adults (8 with normal hearing and 4 with sensorineural hearing loss). A cortical auditory evoked potential (CAEP) threshold protocol was modeled after an existing auditory brainstem response (ABR) protocol used in-house. A t-test was used to identify differences between pure-tone behavioral thresholds and CTE thresholds.Results: Depending on frequency and intensity, CTEs varied from pure-tone behavioral thresholds by as much as 11.2 dB. The average test time to obtain CTEs at four frequencies per ear for 12 participants was 50.85 minutes (SD=12.0). Implications for inter-test reliability of the CTE protocol are discussed. Conclusions:The HEARLab CTE protocol is feasible for predicting pure-tone behavioral thresholds in those with normal hearing or with hearing loss. The CTE procedure is a useful alternative tool when behavioral threshold testing is neither possible nor practical.

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Assessment of hearing threshold in adults with hearing loss using an automated system of cortical auditory evoked potential detection

Abstract: The cortical electrophysiological thresholds obtained with the use of an automated response detection system were highly correlated with behavioral thresholds in the group of individuals with hearing loss.

Cited by 10 publications

References 24 publications

Optimising hearing services for adults living with dementia and hearing impairment in residential aged care facilities

Optimising hearing services for adults living with dementia and hearing impairment in residential aged care facilities

Characterization of Volume-Based Changes in Cortical Auditory Evoked Potentials and Prepulse Inhibition

The Hearlab Cortical Tone Evaluation (Cte) Protocol: A Clinical Feasibility Study

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