Related Experiment Videos
Steady-state evoked potentials to amplitude modulated tones in the monkey
M J Burton1, L T Cohen, F W Rickards
1Human Communication Research Centre, University of Melbourne, Royal Victorian Eye & Ear Hospital, Australia.
Acta Oto-Laryngologica
|September 1, 1992
Summary
Objective hearing assessment using steady-state evoked potentials (SSEPs) was validated in macaque monkeys. This method accurately determined auditory thresholds in animals unable to perform behavioral audiometry, showing promise for audiology research.
Area of Science:
- Neuroscience
- Audiology
- Animal Models
Background:
- Objective hearing threshold assessment is crucial for subjects unable to complete behavioral audiometry.
- Steady-state evoked potentials (SSEPs) offer a potential objective measure.
Purpose of the Study:
- To evaluate the efficacy of SSEPs in response to amplitude-modulated tones for frequency-specific hearing threshold assessment in a macaque monkey model.
- To compare SSEP-derived thresholds with established behavioral audiometry data in this species.
Main Methods:
- Utilized steady-state evoked potentials (SSEPs) in response to amplitude-modulated tones.
- Investigated various amplitude-modulation frequencies in anesthetized macaque monkeys.
- Employed a computerized automatic response detection system to determine auditory thresholds.
Main Results:
- An amplitude-modulation frequency of 165 Hz yielded optimal response detection in anesthetized macaques.
- Computerized SSEP analysis provided auditory thresholds that closely matched previously documented behavioral thresholds for the species.
Conclusions:
- SSEPs provide a reliable and objective method for assessing frequency-specific hearing thresholds in non-human primates.
- This technique is valuable for audiological research in subjects incapable of traditional behavioral testing.