8 research outputs found

    Estudo normativo e avaliação da influência da idade no potencial evocado auditivo em cães sem raça definida

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    The aim of this paper was to obtain normative data of auditory evoked potentials from 34 mixed breed dogs and evaluate the age influence. The animals were divided in two groups of different ages and auditory evoked potential was performed with a 85dB stimulus intensity. Group 1 included 16 dogs between 1 and 8 years of age, and group 2 included 18 dogs with over 8 years of age. The length and head diameter were measured and there was no statistical difference between the two groups. In group 1, mean latencies of waves I, III, and V were 1.13; 2.64, and 3.45ms, and the intervals I-III, III-V, and I-V were 1.51; 0.81, and 2.32 ms, respectively. In group 2, the mean latencies of waves I, III and V were 1.15, 2.62, and 3.55ms, and the intervals I-III, III-V, and I-V were 1.47, 0.93, and 2.40ms, respectively. The latencies observed in this study were similar to previous studies conducted by other authors. It was observed that significant differences were present for wave V and intervals III-V and I-V latencies when comparing groups with different ages, consequently this characteristic must be considered during BAEP result interpretation.Aluna de pós-graduação Faculdade de Medicina Veterinária e Zootecnia FMVZ-Unesp, Botucatu, SPFaculdade de Medicina de Botucatu FMB-Unesp, Botucatu, SPFaculdade de Medicina Veterinária e Zootecnia FMVZ-Unesp, Botucatu, SPAluna de pós-graduação Faculdade de Medicina Veterinária e Zootecnia FMVZ-Unesp, Botucatu, SPFaculdade de Medicina de Botucatu FMB-Unesp, Botucatu, SPFaculdade de Medicina Veterinária e Zootecnia FMVZ-Unesp, Botucatu, S

    Technology transfer-entrepreneurship and the university

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    Brainstem auditory-evoked potential in Boxer dogs

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    Brainstem auditory-evoked potential (BAEP) has been widely used for different purposes in veterinary practice and is commonly used to identify inherited deafness and presbycusis. In this study, 43 Boxer dogs were evaluated using the BAEP. Deafness was diagnosed in 3 dogs (2 bilateral and 1 unilateral) allowing the remaining 40 Boxers to be included for normative data analysis including an evaluation on the influence of age on the BAEP. The animals were divided into 2 groups of 20 Boxers each based on age. The mean age was 4.54 years (range, 1-8) in group I, and 9.83 years (range, 8.5-12) in group II. The mean latency for I, III, and V waves were 1.14 (±0.07), 2.64 (±0.11), and 3.48 (±0.10) ms in group I, and 1.20 (±0.12), 2.73 (±0.15), and 3.58 (±0.22) ms in group II, respectively. The mean inter-peak latencies for the I-III, III-V and I-V intervals were 1.50 (±0.15), 0.84 (±0.15), and 2.34 (±0.11) ms in group I, and 1.53 (±0.16), 0.85 (±0.15), and 2.38 (±0.19) ms in group II, respectively. Latencies of waves I and III were significant different between group I and II. For the I-III, III-V and I-V intervals, no significant differences were observed between the 2 groups. As far as we know, this is the first normative study of BAEP obtained from Boxer dogs.O potencial evocado auditivo de tronco encefálico (PEATE) tem sido amplamente utilizado com diferentes finalidades na prática veterinária e é comumente usado para identificar a surdez hereditária e a presbiacusia. No presente estudo, 43 cães da raça Boxer foram pelo teste PEATE. Foi diagnosticada surdez em 3 cães (2 bilaterais e 1 unilateral), e 40 Boxers foram usados no estudo normativo incluindo avaliação da influência da idade no PEATE. Os animais foram divididos de acordo com a idade em 2 grupos de 20 Boxers cada. A idade media foi 4,54 anos (variação de 1-8) no grupo I e 9,83 anos (variação de 8,5-12) no grupo II. A latência media das ondas I, III e V foram: 1,14 (±0,07); 2,64 (±0,11) e 3,48 (±0,10) ms no grupo I; e 1,20 (±0,12); 2,73 (±0,15) e 3,58 (±0,22) ms no grupo II, respectivamente. A latência media para os intervalos I-III, III-V e I-V foram 1,50 (±0,15); 0,84 (±0,15) e 2,34 (±0,11) ms no grupo I; e 1,53 (±0,16); 0,85 (±0,15) e 2,38 (±0,19) ms no grupo II, respectivamente. As latências das ondas I e III foram estatisticamente diferentes entre os grupos I e II. Não foram observadas diferenças estatísticas entre os dois grupos para os intervalos I-III, III-V e I-V. De acordo com a revisão realizada, este é o primeiro estudo normativo de BAEP realizado em cães da raça Boxer.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual Paulista Júlio de Mesquita Filho (Unesp) Faculdade de Medicina Veterinária e Zootecnia (FMVZ) Departamento de Clínica VeterináriaUnesp Faculdade de Medicina de Botucatu (FMB) Departamento de Neurologia, Psicologia e PsiquiatriaUnesp FMVZ Departamento de Higiene Veterinária e Saúde PúblicaMassey University College of Sciences Institute of Veterinary, Animal and Biomedical SciencesUnesp FMVZ Departamento de Clínica VeterináriaUniversidade Estadual Paulista Júlio de Mesquita Filho (Unesp) Faculdade de Medicina Veterinária e Zootecnia (FMVZ) Departamento de Clínica VeterináriaUnesp Faculdade de Medicina de Botucatu (FMB) Departamento de Neurologia, Psicologia e PsiquiatriaUnesp FMVZ Departamento de Higiene Veterinária e Saúde PúblicaUnesp FMVZ Departamento de Clínica Veterinári

    Unimodal and cross-modal plasticity in the ‘deaf’ auditory cortex

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    The human auditory system: A timeline of development

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