Thresholds for Short-Latency Auditory-Evoked Potentials to Tones in Notched Noise in Normal-Hearing and Hearing-Impaired Subjects

Stapells, David R.; Picton, Terence W.; Durieux‐Smith, Andrée; Edwards, Christopher G.; Moran, Linda M.

doi:10.3109/00206099009072857

Cited by 109 publications

(82 citation statements)

References 27 publications

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“…A necessidade de obter seletividade de freqüências na avaliação auditiva por PEATC tem levado muitos pesquisadores (Gorga, 1988;Stapells-Picton, 1990; Stapells; Gravel; Martin, 1995) à utilização de outros recursos, tais como: 1) uso de mascaramento associado aos cliques para isolar áreas da cóclea e obter respostas a freqüências específicas 2) o uso de estímulos tonais breves, com freqüência específica, usualmente denominados cliques filtrados, tones pips ou tones bursts breves. No entanto, a dificuldade na padronização dos estímulos e da detecção das respostas, aliados ao longo tempo gasto na determinação dos limiares eletrofisiológicos de cada freqüência em particular tornam estas técnicas de difícil aplicabilidade na prática clínica (Conijin, 1993 Potenciais evocados auditivos de estado estável são respostas eletrofisiológicas a tons modulados em amplitude que podem ser registradas por eletródios de superfície, tal como os demais potenciais evocados corticais ou de tronco cerebral.…”

Section: Introductionunclassified

Análise das respostas obtidas por potenciais evocados auditivos de estado estável em indivíduos normais

Ferraz

Freitas

Marchiori

2002

Rev. Bras. Otorrinolaringol.

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Introdução: Potenciais evocados auditivos de estado estável são respostas eletrofisiológicas a tons contínuos, modulados em amplitude que podem ser registradas por eletródios de superfície e permitem uma avaliação mais detalhada e objetiva da audição, devido à seletividade de freqüências e objetividade na análise das respostas. Objetivo: Averiguar se esta nova técnica, que está sendo introduzida no Brasil, é realmente confiável e eficiente para ser incluída na rotina de avaliação audiométrica objetiva. Forma de estudo: clínico prospectivo. Material e Método: analisar as respostas dos potenciais auditivos de estado estável, nas freqüências de 500, 1000, 2000 e 4000Hz, obtidas em um grupo composto por 25 indivíduos adultos, com idades entre 21 e 40 anos, sem queixas auditivas e com limiares psicoacústicos entre 0 e 15dB NA. Resultados: As respostas evocadas dos potenciais de estado estável no domínio da freqüência foram facilmente detectadas, através de procedimentos matemáticos, entre 20 e 40dB NA em todos os indivíduos, em pelo menos seis das oito freqüências pesquisadas, correspondente a 97% de um total de 200 respostas esperadas. Uma grande concentração (85%) destas respostas foi obtida até 30dB NA, das quais: 80% em 500Hz; 84% em 1KHz; 90% em 2KHz e 86% na freqüência de 4KHz. Conclusão: Os resultados mostraram-se compatíveis com os estudos realizados por pesquisadores de outros países, isto é, uma aproximação de 15 a 20dB NA dos limiares psicoacústicos. Foram confirmadas também as principais vantagens sobre os outros métodos de avaliação auditiva eletrofisiológica: a objetividade da análise dos registros e a seletividade de freqüência das respostas dos potenciais evocados auditivos de estado estável, fazendo supor que, em breve, esta técnica assumirá um papel de destaque na audiometria objetiva. This present paper has analyzed normal-hearing auditory steady-state responses at frequencies of 500, 1000, 2000 e 4000Hz, recorded from a group of 25 subjects between 21 and 40 years of age. The subjects had hearing thresholds of 0 to 15dB HL, and none of them had any personal history of hearing impairment. Results: Steady-state evoked responses in the frequency-domain were easily detected bilaterally, using statistical techniques, in all of the subjects with intensities varying between 20 and 40dB HL, in at least six of eight studied frequencies, corresponding to 97% of 200 waited responses. A high concentration of the responses (85%) were obtained at intensities down to 30dB HL, of which 80% to tones of 500Hz; 84% to tones of 1KHz; 90% to tones of 2KHz, and 86% to tones of 4KHz. Conclusion: Auditory steady-state evoked responses reported here were quite similar to several studies done in other countries, that is, nearly 15 to 20dB HL from behavioral thresholds. The main advantages over other electrophysiologic auditory evaluation techniques were confirmed as: the recording analysis objectiveness, and steadystate frequency-specific responses, so it is believed to be a technique that will soon play an important role ...

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Section: Introductionunclassified

Análise das respostas obtidas por potenciais evocados auditivos de estado estável em indivíduos normais

Ferraz

Freitas

Marchiori

2002

Rev. Bras. Otorrinolaringol.

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“…The acoustic signal usually has consisted of a click, which stimulates a large part of the cochlea. [8][9][10][11][12][13][14] Brainstemevoked response audiometry by a click (CS) is useful for differentiating neurologic from conduction deafness 15,16 and is useful in assessing some brainstem pathologic changes. 17,18 Frequency-specific information is needed to assess the extent of neurologic deafness, such as noise-induced deafness and that caused by ototoxicity and presbycusis, each of which can be partial and frequency-specific.…”

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confidence: 99%

Click and Low‐, Middle‐, and High‐Frequency Toneburst Stimulation of the Canine Cochlea

Haar

Haagen

Groot

et al. 2002

Veterinary Internal Medicne

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A method was developed to deliver tonebursts ranging in frequency from 1 to 32 kHz for frequency-specific assessment of the canine cochlea. Brainstem auditory-evoked responses (early latency responses, 0-10 ms) to a click (CS) and to 1-, 2-, 4-, 8-, 12-, 16-, 24-, and 32-kHz toneburst stimulations (TS) were compared at 80-dB sound pressure level stimulus (SPL) intensity in 10 adult dogs. All stimulations yielded a 5-7 positive wave pattern, with the exception of the 1-kHz TS, which evoked a frequencyfollowing response (FFR). Thresholds were lowest for the CS and the 12-and 16-kHz TS. All individual peak latencies for TS were significantly (P Յ .05) longer than for CS. Peak I latencies were significantly (P Յ .05) shorter for the 12-and 16-kHz TS than for the other TS. Interpeak latencies I-V were significantly (P Յ .05) longer for the 4-to 32-kHz TS than for CS. Differences in interpeak latencies I-III were not significant. Amplitudes of waves I and V were significantly (P Յ .05) lower for TS than for CS, except for higher wave V amplitude (P Յ .05) at 2-and 32-kHz TS. Peak I-V amplitude ratios were significantly (P Յ .05) higher for the 2-, 4-, 16-, 24-, and 32-kHz TS and lower for the 8-and 12-kHz TS, compared to CS. We conclude that reproducible information on frequency specificity of the canine cochlea can be obtained by TS. This report provides a normative database for parameters needed to evaluate frequency-specific hearing loss in dogs.Key words: Brainstem-evoked response audiometry; Dog; Frequency-specificity; Threshold audiogram. Several methods have been employed to test hearing ability in dogs, ranging from behavioral studies to measurement of electrical responses after auditory stimulation, by impedance audiometry (tympanometry, acoustic reflex testing), evoked response audiometry (brainstem [BAER] and middle latency auditory-evoked responses), and cochlear microphony. 1-7During the past 2 decades, BAERs have been used for this purpose with increasing frequency in veterinary medicine. The acoustic signal usually has consisted of a click, which stimulates a large part of the cochlea.8-14 Brainstemevoked response audiometry by a click (CS) is useful for differentiating neurologic from conduction deafness 15,16 and is useful in assessing some brainstem pathologic changes. 17,18 Frequency-specific information is needed to assess the extent of neurologic deafness, such as noise-induced deafness and that caused by ototoxicity and presbycusis, each of which can be partial and frequency-specific. [18][19][20][21][22][23] Considerable research has been conducted on factors that influence wave latency, amplitude, and thresholds in dogs and on the clinical applicability of these factors.9,24-31 Behavioral studies indicate that dogs can hear frequencies up to 45 kHz, 1 considerably higher frequencies than heard by humans, 13 but the tonebursts used in BAER assessment of hearing in dogs have been at frequencies only as high as 8 kHz. 24-26From The aim of this study was to collect reference values for BAER wave...

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“…[4] In our study, in patients with very advanced S/N hearing loss, a difference of 4-6 dB nHL was found.…”

Section: Discussionmentioning

confidence: 84%

Comparison of hearing thresholds of patients with advanced, and very advanced sensorineural type hearing loss using tone-evoked ABR

Dündar¹,

Kulduk²,

Soy³

et al. 2014

J Med Updates

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Amaç: Bu çal›flmada hava yolu tonal ABR ile saf ses hava yolu iflitme efliklerinin karfl›laflt›r›lmas› yap›larak; klasik odyometrik yöntemlerle ileri ve çok ileri derece sensörinöral (S/N) iflitme kayb› olan kiflilerin tonal ABR ile elde edilen efliklerinin korelasyonu araflt›r›lm›flt›r.Yöntem: ‹leri ve çok ileri derece S/N iflitme kayb› olan 80 hasta çal›fl-maya dahil edildi. Saf ses ölçümlerinde ileri ve çok ileri derecede sensö-rinöral iflitme kayb› hastalar›n 500, 2000 ve 4000 Hz'te elde edilen saf ses hava yolu eflikleri ile tonal-ABR eflik de¤erleri aras›nda karfl›laflt›rma yap›ld›.Bulgular: Çal›flmaya al›nan hastalar›n yafl ortalamas› 21.8±3.45 olarak saptand› ve tüm hastalar erkekti. Tonal ABR ve saf ses eflikleri aras›nda 500 Hz uyaran için ortalama fark 4.75 dB, 2000 Hz uyaran için 6.25 dB ve 4000 Hz uyaran için fark 4.87 dB bulunmufltur.Sonuç: Sonuç olarak ileri derece S/N iflitme kayb› olan bireylerde saf ses odyometri eflikleri ile 500, 2000 ve 4000 Hz tonal ABR V.dalga ile elde edilen elektrofizyolojik eflikler aras›nda güçlü bir korelasyon vard›r. Tonal ABR, saf ses odyometri yap›lamad›¤› durumlarda, iflitme kayb› olan hastalar›n tan›s›nda güvenilir bir test olarak kullan›la-bilir.Anahtar sözcükler: Saf ses odyometri, ileri derecede sensörinöral iflitme kayb›. AbstractObjective: In the present study, thresholds of airway tone-burst auditory brainstem response (ABR), and pure-tone audiometry were compared, and correlations between threshold values obtained with classical audiometric methods, and pure-tone airway hearing in individuals with advanced, and very advanced sensorineural (S/N) hearing loss were investigated.

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Thresholds for Short-Latency Auditory-Evoked Potentials to Tones in Notched Noise in Normal-Hearing and Hearing-Impaired Subjects

Cited by 109 publications

References 27 publications

Análise das respostas obtidas por potenciais evocados auditivos de estado estável em indivíduos normais

Análise das respostas obtidas por potenciais evocados auditivos de estado estável em indivíduos normais

Click and Low‐, Middle‐, and High‐Frequency Toneburst Stimulation of the Canine Cochlea

Comparison of hearing thresholds of patients with advanced, and very advanced sensorineural type hearing loss using tone-evoked ABR

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