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. Author manuscript; available in PMC: 2019 Aug 21.
Published in final edited form as: Neuroscience. 2018 Jun 25;386:150–165. doi: 10.1016/j.neuroscience.2018.06.004

Figure 4: In young animals, SNR thresholds were higher (poorer) than aged animals for SAM tones in the presence of high-pass steady-state noise.

Figure 4:

The bar graph shows mean SNR, thresholds in aged and young animals for 256 Hz SAM tone (100 or 50 % AΜ depth) processing in high-pass noise at matched wave I or EFR, amplitudes. SNR, thresholds of young animals varied with modulation depth whereas SNR, thresholds of older animals did not. Thresholds were determined at the cut-off of 10 dB above noise floor for the 256 Hz FFT peak. Error bars are standard error of means.