Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: Mihaela Armasu, Gheorghe Solcan, Gabriela Dumitrita Stanciu, Mihai Musteata
Editorial: Current Opinion in Biotechnology, Volume 24, Supplement 1, p.S107, 2013.
Brainstem auditory evoked responses (BAER) in veterinary practice are recorded with needle electrodes. To present, there is no other study regarding BAER acquired with surface electrodes in dogs.
The aim of the study is to describe the BAER in Argentine Mastiff dogs acquired with surface electrodes.
Methods: BAER was recorded in seven healthy Argentine Mastiff dogs (since congenital deafness is more frequent in this breed) for monoaural and binaural stimulation in response to stimulus intensities of 90 dBSPL. The latencies and amplitudes of waves I, III and V, and the interwave intervals I-III, III-V and I-V were calculated. The results were analyzed in SPSS 20 with Wilcoxon Signed Ranks Test for 2 paired samples, at a significance threshold P < 0.05. Results: The values for registered latencies were: 1.09±0.025 for wave I, 2.937±0.092 for wave III and 3.827±0.226 for wave V. No statistical differences were observed for BAER latencies, amplitudes and intervals between left and right ear. Differences were obtained for wave III and V latencies when compared monoaural with binaural stimulation (P=0.018). Also, statistical differences were noticed for I-III and I-V intervals when compared monoaural with binaural stimulation (P=0.018). Discussions: Surface electrodes allow the identification of all waves. Our recorded latencies are lower than those previously described, possibly as a direct influence of using surface electrodes. Conclusion: Acquisition of BAER with surface electrodes can be an accurate method to assess the integrity of the pathways involved in the transmission of acoustic information through the brainstem in dogs.
Cuvinte cheie: dog, brainstem, surface electrodes