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Auditory-evoked response in the clinically normal dog: early latency components
American Journal of Veterinary Research
|October 1, 1984
Summary
This study details the brainstem auditory-evoked response (BAER) in dogs, finding that increased sound intensity boosts wave amplitude and decreases latency, while higher click rates reduce amplitude and increase latency.
Area of Science:
- Neuroscience
- Auditory Neuroscience
- Veterinary Neurology
Background:
- The brainstem auditory-evoked response (BAER) reflects auditory pathway function.
- Understanding canine BAER is crucial for diagnosing hearing impairments in dogs.
Purpose of the Study:
- To characterize the normal canine BAER waveform.
- To investigate the effects of stimulus intensity and rate on canine BAER parameters.
Main Methods:
- Recording BAER in 6 clinically normal adult dogs using monaural click stimuli.
- Varying stimulus intensity (50-90 dB HL) and rate (10-50/s).
- Analyzing wave amplitude and peak latency.
Main Results:
- A consistent BAER waveform with waves I, II, III, V, and VI was observed.
- Increased stimulus intensity (50-90 dB HL) resulted in greater wave amplitude and shorter latency (P < 0.01).
- Increased stimulus rate (5-50/s) led to decreased amplitude and increased latency.
Conclusions:
- Canine BAER is a reliable measure of auditory function.
- Stimulus intensity and rate significantly influence BAER parameters in dogs.
- These findings provide a normative dataset for canine BAER studies.