The Subject; Expected Hearing Range - TDT Medusa4Z User Manual

The Subject

Planning or setting up your ABR experiment must begin with an understanding of the subject's
normal hearing range and factors that might have an effect on its response or recording. ABRs
have been measured for many species. In this guide, we'll focus on the three most common
species used in ABR experiments and screening protocols: mice, rats, and guinea pigs.

Expected Hearing Range

ABR tests are typically focused on the range in which the species is commonly known to hear
well.
Subject
Mice
Rats
Guinea Pigs
Note
The hearing range of laboratory subjects may vary across different strains or colonies and can be affected by age,
the environment, and anesthesia.
Standard Testing Range
4 kHz to 32/48 kHz
> 4 kHz to 24/32 kHz
> 1 kHz to 18 kHz
Typical Threshold Range
> 25 - 30 dB at 16 kHz
> 30 dB at 16 kHz
> 30 dB at 8 kHz
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