Postnatal Development of the Auditory Brainstem Response (ABR) in Beagles

Kuse, Hiroshi; Okaniwa, Azusa

doi:10.1538/expanim1978.42.3_377

Cited by 4 publications

(2 citation statements)

References 14 publications

(20 reference statements)

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“…These studies have shown that as mammals and birds develop, responses are found first to low and middle frequencies and only later do responses to higher frequencies develop ͑e.g., Moore and Irvine, 1979;Ehret and Romand, 1981;Gray and Rubel, 1985;Brittan-Powell and Dooling, 2000͒, despite the fact that morphological development proceeds from high frequency to low frequency regions of the cochlea ͑Pujol and Marty, 1970;Rubel, 1978͒. In mammals this apparent discrepancy has been linked to the opening of the external ear canal ͑Hill et al, 1998͒ and formation of the middle ear bones ͑Ehret and Romand, 1981;Geal-Dor et al, 1993͒, both of which are necessary to transmit higher frequency information to the inner ear. Mammals and birds also show a developmental decrease in the latency of brainstem response to auditory stimulation ͑e.g., Walsh et al, 1986b;Kuse and Okaniwa, 1993;Hill et al, 1998;Brittan-Powell and Dooling, 2000͒ and a developmental increase in amplitude of brainstem response ͑e.g., Walsh et al, 1986c;Kuse and Okaniwa, 1993;Brittan-Powell and Dooling, 2000͒, perhaps due to changes in myelination of neurons in the auditory system, innervation of the sensory cells of the ear, and cochlear mechanics ͑Walsh et al., 1986b, c͒. Thus, correlation between development of auditory performance and structure can be used to construct hypotheses on the role of different portions of the auditory system in hearing ability.…”

Section: Introductionmentioning

confidence: 99%

Development of form and function in peripheral auditory structures of the zebrafish (Danio rerio)

Higgs

Rollo

Souza

et al. 2003

The Journal of the Acoustical Society of America

116

130

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Investigations of the development of auditory form and function have, with a few exceptions, thus far been largely restricted to birds and mammals, making it difficult to postulate evolutionary hypotheses. Teleost fishes represent useful models for developmental investigations of the auditory system due to their often extensive period of posthatching development and the diversity of auditory specializations in this group. Using the auditory brainstem response and morphological techniques we investigated the development of auditory form and function in zebrafish (Danio rerio) ranging in size from 10 to 45 mm total length. We found no difference in auditory sensitivity, response latency, or response amplitude with development, but we did find an expansion of maximum detectable frequency from 200 Hz at 10 mm to 4000 Hz at 45 mm TL. The expansion of frequency range coincided with the development of Weberian ossicles in zebrafish, suggesting that changes in hearing ability in this species are driven more by development of auxiliary specializations than by the ear itself. We propose a model for the development of zebrafish hearing wherein the Weberian ossicles gradually increase the range of frequencies available to the inner ear, much as middle ear development increases frequency range in mammals.

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Section: Introductionmentioning

confidence: 99%

Development of form and function in peripheral auditory structures of the zebrafish (Danio rerio)

Higgs

Rollo

Souza

et al. 2003

The Journal of the Acoustical Society of America

116

130

View full text Add to dashboard Cite

show abstract

“…This pattern of wave formation, however, is considered by some authors (14,30,38) to be outdated and only approximate. The multitude of nuclei responsible for the transmission of sound, as well as their frequent crossing and passing ipsi-and contralaterally, means that, according to the current state of knowledge, we cannot be completely certain where a given wave is generated.…”

Section: Discussionmentioning

confidence: 99%

BAER hearing test: Principles of operation and interpretation for dogs and cats

WOJTAS,

ABRAMOWICZ,

KUREK

2023

Medycyna Weterynaryjna

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The nervous system of animals is a focus of interest of multiple research centres. The evolution of medical engineering, the development of new research techniques and the improvement of existing ones increase our understanding of the nervous system. One of the diagnostic methods which can be used to help detect hearing disorders of varying severity in animals and humans is the study of brainstem evoked potentials known as BAER (brainstem auditory evoked response), BAEP (brainstem auditory evoked potentials) or ABR (auditory brainstem response). Although this method has existed for decades and is used in many countries around the world, the knowledge gathered by doctors over the years lacks proper systematization, and neither standard parameters nor a coherent implementation strategy have yet been established. Various modifications of this method are also available, which suggests directions for further research and facilitates an increase in the pool of knowledge concerning the physiology of hearing. Unfortunately, the lack of established recommendations for the practical implementation of hearing tests using the BAER method makes it difficult to compare test results and to broaden the scope of application of this method in dogs and cats. For the most part, this problem results from a random selection of test parameters by researchers who do not have sufficient knowledge about the physics of hearing. This work aims to summarize the results obtained in this field by various authors around the world and to determine the best-performing variants of the BAER method. The optimization and systematization of the parameters not only increases the reproducibility of the results and makes them more transparent and uniform for both doctors and animal keepers, but also renders them more reliable. This could aid in the creation of a worldwide database resulting in beneficial outcomes over time and may also allow veterinarians to determine the most effective approach for conducting a study depending on many variables that need to be taken into account.

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Deafness in dogs and cats

Strain

2011

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This book is a resource on the study of different causes of deafness in dogs and cats. Topics discussed are: anatomy of the auditory system; physiology of the auditory system; forms and mechanisms of deafness; hereditary deafness; later onset deafness; brainstem auditory evoked response (BAER); other tests of auditory function; and living with a deaf dog or cat. This book is intended for veterinarians, pet owners and breeders.

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Postnatal Development of the Auditory Brainstem Response (ABR) in Beagles

Cited by 4 publications

References 14 publications

Development of form and function in peripheral auditory structures of the zebrafish (Danio rerio)

Development of form and function in peripheral auditory structures of the zebrafish (Danio rerio)

BAER hearing test: Principles of operation and interpretation for dogs and cats

Deafness in dogs and cats

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