Brainstem auditory evoked potential testing in Dalmatian dogs in Brazil

Abstract

The brain stem auditory-evoked potential (BAEP) is an electrophysiologic test that detects and records the electrical activity in the auditory system from cochlea to midbrain, generated after an acoustic stimulus applied to the external ear. The aim of this study is to obtain normative data for BAEP in Dalmatian dogs in order to apply this to the evaluation of deafness and other neurologic disorders. BAEP were recorded from 30 Dalmatian dogs for a normative Brazilian study. Mean latencies for waves I, III, and V were 1.14 (±0.09), 2.62 (±0.10), and 3.46 (±0.14) ms, respectively. Mean inter-peak latencies for I-III, III-V, and I-V intervals were 1.48 (±0.17), 0.84 (±0.12), and 2.31 (±0.18) ms, respectively. Unilateral abnormalities were found in 16.7% of animals and bilateral deafness was seen in one dog. The normative data obtained in this paper is compatible with other published data. As far as we know this is the first report of deafness occurrence in Dalmatian dogs in Brazil.

Evaluation of central vestibular syndrome in dogs using brainstem auditory evoked responses recorded with surface electrodes

“…In the first 10 miliseconds (msec) after each stimulus, clinical stimuli delivered to one or both ears evoke up to seven submicrovolt positive waves. The waves are marked in roman numbers from I to VII (Luttgen, 1994;Biacabe et al, 2001;Webb, 2009;Palumbo et al, 2014).…”

Brainstem Auditory Evoked Responses in Healthy Argentine Mastiff Dogs Recorded With Surface Electrodes

“…The BAER test has been commonly used in evaluating the auditory function of animals and humans, being the only objective method that can provide the certain diagnosis of deafness (Wilson et al, 2006, Palumbo et al, 2014. Its advantages include being easy to perform, noninvasive, safe and cost-effective, compared with other objective measures of the auditory function.…”