Validity of correction factors applied to auditory steady-state responses (ASSRs) in normal hearing adults in chartr EP system

Ghasemahmad, Zahra; Farahani, Saeid

doi:10.1007/s00405-019-05451-3

Cited by 6 publications

(9 citation statements)

References 27 publications

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“…In commercial acquisition systems, to counteract differences between ASSR and PTA, correction factors are applied based on the carrier frequency. Correction factors are set based on the difference between PTA and ASSR thresholds in subjects with varied hearing and age range ( 50 ). These correction factors can differ from one system manufacturer to another and are set as standard for most groups (i.e., adults, children, those with and without HL), which can result in variations in the threshold measures from one commercial system to another for the same subject ( 50 ).…”

Section: Discussionmentioning

confidence: 99%

“…Correction factors are set based on the difference between PTA and ASSR thresholds in subjects with varied hearing and age range ( 50 ). These correction factors can differ from one system manufacturer to another and are set as standard for most groups (i.e., adults, children, those with and without HL), which can result in variations in the threshold measures from one commercial system to another for the same subject ( 50 ). It may be that the correction factors applied to other age ranges may be suboptimal for older adults as used in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…It may be that the correction factors applied to other age ranges may be suboptimal for older adults as used in the present study. Indeed, it has previously been suggested that ASSR can be a more useful technique in children, adults and older adults if the correction factors applied are defined specifically for each age group ( 50 ).…”

Section: Discussionmentioning

confidence: 99%

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Comparison of Auditory Steady-State Responses With Conventional Audiometry in Older Adults

et al. 2022

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Behavioral measures, such as pure-tone audiometry (PTA), are commonly used to determine hearing thresholds, however, PTA does not always provide reliable hearing information in difficult to test individuals. Therefore, objective measures of hearing sensitivity that require little-to-no active participation from an individual are needed to facilitate the detection and treatment of hearing loss in difficult to test people. Investigation of the reliability of the auditory steady-state response (ASSR) for measuring hearing thresholds in older adults is limited. This study aimed to investigate if ASSR can be a reliable, objective measure of frequency specific hearing thresholds in older adults. Hearing thresholds were tested at 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz in 50 participants aged between 60 and 85 years old, using automated PTA and ASSR. Hearing thresholds obtained from PTA and ASSR were found to be significantly correlated (p < .001) in a cohort consisting of participants with normal hearing or mild hearing loss. ASSR thresholds were significantly higher as compared to PTA thresholds, but for the majority of cases the difference remained within the clinically acceptable range (15 dB). This study provides some evidence to suggest that ASSR can be a valuable tool for estimating objective frequency-specific hearing thresholds in older adults and indicate that ASSR could be useful in creating hearing treatment plans for older adults who are unable to complete behavioral PTA. Further research on older adults is required to improve the methodological features of ASSR to increase consistency and reliability, as well as minimize some of the limitations associated with this technique.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Comparison of Auditory Steady-State Responses With Conventional Audiometry in Older Adults

et al. 2022

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“…Outros estudos mostram que para detectar audição normal, a técnica dicótica múltipla da RAEE, realizadas neste estudo, ou seja, estimulação das duas orelhas e das quatro frequências simultaneamente é um método viável para estimar limiares auditivos que reduziriam substancialmente o tempo de registro em comparação com as técnicas convencionais de estímulo único (Herdman & Stapells, 2001;Ghasemahmad & Farahani, 2019).…”

Section: Discussionunclassified

Determinação dos limiares auditivos de forma objetiva e automática em adultos normo-ouvintes

Potgurski

Ribeiro

Silva

2021

RSD

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Objetivo: verificar a aplicabilidade do exame de resposta auditiva de estado estável (RAEE), correlacionando os limiares auditivos obtidos neste exame com os limiares auditivos obtidos na audiometria tonal liminar (ATL) em indivíduos sem queixas auditivas. Metodologia: Foram avaliados 15 indivíduos adultos normo-ouvintes. A avaliação foi composta pela ATL e RAEE, ambas para verificação do grau da audição, sendo a primeira uma medida comportamental e a segunda, eletrofisiológica. Na ATL foram avaliadas a acuidade auditiva nas frequências de 250, 500, 1000, 2000, 3000, 4000, 6000 e 8000 Hz, de ambas as orelhas. A pesquisa da RAEE foi realizada em modo multifrequencial e dicótico, ou seja, foram pesquisas as frequência de 500, 1000, 2000 e 4000 Hz nas duas orelhas ao mesmo tempo, com o objetivo de avaliar o nível mínimo de resposta obtido de maneira automática. Resultados: Na ATL os limiares obtidos estiveram abaixo de 25 dBNA para todas as frequências avaliadas e a mediana dos valores encontrados foram menores do que os valores medianos encontrados na RAEE. No teste de correlação de Spearman, houve correlação significativa apenas na frequência de 500 Hz. Conclusão: Os limiares auditivos obtidos pela RAEE foram detectados em todos os participantes do estudo e os valores foram superiores aos encontrados na ATL, entretanto é comum os resultados eletrofisiológicos serem superiores aos observados em exames comportamentais. Não houve correlação entre os limiares obtidos entre as técnicas para a maioria das frequências avaliadas, em indivíduos adultos normo-ouvintes. Desta forma, sugere-se a realização de pesquisas futuras com um maior tamanho amostral, adotando-se a mesma metodologia aplicada nesse estudo.

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“…ASSRs were performed at four carrier frequencies of 500, 1000, 2000, and 4000 Hz and intensity range of 10-80 dB SPL. The detailed modulation rate choice for each combination of MF and CF are as previously reported here [22].…”

Section: Methodsmentioning

confidence: 99%

Enhanced 40 and 80 Hz Auditory Steady State Responses in Idiopathic Tinnitus

Ghasemahmad,

Mahmoudian,

Gavazzi

et al. 2024

Preprint

Self Cite

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Objectives: This study aimed to investigate changes in auditory processing using auditory steady state response (ASSR) in patients with idiopathic tinnitus. Method: 19 tinnitus patients and 23 control subjects without tinnitus were examined with multiple ASSR. Three modulation frequencies of 20, 40, and 80HZ were tested and the steady state responses were compared between tinnitus and control group. Further, the thresholds in ipsi- and contralateral side to ear with tinnitus sensation were compared. Results: Our findings showed no significant difference in ASSR thresholds in ipsi- and contralateral side to ear with tinnitus. However, we observed enhanced ASSRs at 40 and 80Hz modulation in patients with Idiopathic tinnitus compared to no-tinnitus control subjects. Conclusions: The results of this study suggest possible sensory deficits along higher order auditory regions in patients with idiopathic tinnitus. Further, our data indicates a bilateral involvement of auditory pathway in these regions in patients with lateralized tinnitus.

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Validity of correction factors applied to auditory steady-state responses (ASSRs) in normal hearing adults in chartr EP system

Cited by 6 publications

References 27 publications

Comparison of Auditory Steady-State Responses With Conventional Audiometry in Older Adults

Comparison of Auditory Steady-State Responses With Conventional Audiometry in Older Adults

Determinação dos limiares auditivos de forma objetiva e automática em adultos normo-ouvintes

Enhanced 40 and 80 Hz Auditory Steady State Responses in Idiopathic Tinnitus

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