Low-Frequency Auditory Brainstem Response Threshold

Laukli, E.; Fjermedal, O.; Mair, I. W. S.

doi:10.3109/01050398809042189

Cited by 26 publications

(14 citation statements)

References 33 publications

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“…[50][51][52] Controversy exists about the frequency specificity of lowfrequency TS, and the evoked responses are different from those of CS-evoked responses. Low-frequency testing has been performed in dogs and cats by TS of 1 kHz or less.…”

Section: Discussionmentioning

confidence: 99%

“…Low-frequency testing has been performed in dogs and cats by TS of 1 kHz or less. 24,51,53 The responses were reported to be FFRs, which are short-latency scalp-recorded evoked potentials elicited by the presentation of low-frequency acoustic stimuli. They are ascribed to the electrical activity in brainstem auditory nuclei synchronous with each wave in the acoustic signal.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

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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“…These studies 7,9 contain few subjects that have electrophysiological thresholds below 70 dBHL, suggesting that the clinical use of tone bursts is questionable.…”

Section: Introductionmentioning

confidence: 99%

Comparação entre limiares de audibilidade e eletrofisiológico por estímulo tone burst

Pinto

Matas

2007

Rev. Bras. Otorrinolaringol.

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Estudos referem compatibilidade entre limiares eletrofisiológicos obtidos com o estímulo acústico tone burst no Potencial Evocado Auditivo de Tronco Encefálico (PEATE) e limiares para tons puros. OBJETIVOS: Verificar a ocorrência das ondas I, III, V e seus respectivos tempos de latência para o tone burst em 500, 1000, 2000 e 4000 Hz a 80 dB NA, e comparar os limiares eletrofisiológicos para o tone burst com limiares de audibilidade e psicoacústico. CASUÍSTICA E MÉTODOS: Avaliação audiológica, psicoacústica e eletrofisiológica da audição de 40 indivíduos audiologicamente normais de 18 a 40 anos, de ambos os sexos. RESULTADOS: Visualizou-se apenas a onda V a 80 dB NA, sendo que sua latência diminuiu com o aumento da freqüência em ambos os sexos. Em 1000, 2000 e 4000 Hz o sexo masculino apresentou maiores valores de latência da onda V a 80 dB NA e valores de limiares eletrofisiológicos mais elevados que o feminino em todas as freqüências. Em 500, 1000 e 2000 Hz, os limiares eletrofisiológico, de audibilidade e psicoacústico encontraram-se estatisticamente diferentes entre si. CONCLUSÂO: Apesar da aplicabilidade clínica dos PEATE com tone burst, são necessárias mais pesquisas a fim de padronizar as técnicas de realização do exame e resultados.

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“…There are many studies related to hearing thresholds successfully identified by using ABRs [3,4,16,17] . Research conducted on infants and children with normal hearing and sensorineural hearing loss has shown a high correlation between pure tone hearing thresholds and tone-burst ABR results [15] .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Relationship Between the Air–Bone Gap and Prolonged ABR Latencies in Mixed-Type Hearing Loss

Birkent

Karlıdağ²,

Başar³

et al. 2017

Int Adv Otol

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OBJECTIVE:The aim of this study was to determine the air-bone gaps in adults with mixed-type hearing loss using air-conduction auditory brainstem response (ABR) latencies. MATERIALS and METHODS:Thirty adults with mixed-type hearing loss (study group) and 30 adults with normal hearing (control group) were included in this study. Before performing ABR measurements, ear, nose, and throat examinations, pure tone audiometry, speech audiometry, acoustic immittance audiometry, and transient evoked autoacoustic emission testing were performed for all participants. Absolute latencies of I, III, and V waves and interpeak latencies (IPL) at 90 decibel hearing level dB nHL were evaluated and compared with air-bone gap results. RESULTS:ABR latencies using click and tone-burst stimulation were obtained and found to be longer in the mixed-type hearing loss group than in the normal hearing group (p<0.05). A moderate positive relationship was detected between the air-bone gap and wave III/V latencies at 0.5/1 kHz, I-V/I-III/III-V IPL at 1 kHz. Only one strong relationship was found between 1 kHz air-bone gap and I-V IPL. CONCLUSION:In this study, the magnitude of the air-bone gap could not determined using prolonged ABR latencies. Delays in ABR latencies were observed, but prolonged ABR latencies was not helpful for calculating the air-bone gap on mixed-type hearing loss.

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Low-Frequency Auditory Brainstem Response Threshold

Cited by 26 publications

References 33 publications

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

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

Comparação entre limiares de audibilidade e eletrofisiológico por estímulo tone burst

Evaluation of the Relationship Between the Air–Bone Gap and Prolonged ABR Latencies in Mixed-Type Hearing Loss

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