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. Author manuscript; available in PMC: 2021 Nov 18.
Published in final edited form as: Neuroscience. 2018 Dec 14;407:21–31. doi: 10.1016/j.neuroscience.2018.12.007

Fig. 2.

Fig. 2.

Responses from the inferior colliculus show evidence for magnified representation of envelope cues with age (A) Amplitude spectra derived from fast Fourier transforms of scalp-recorded envelope following responses to a modified speech token. Boxplots show coefficients from the cross-correlation for different frequency bands. (B) Spectrum of normalized vector strength for local field potentials (LFPs) recorded from the inferior colliculus of young and aged F-344 rats around the periodicity envelope frequency (105–115 Hz). (C) Spectrum of normalized vector strength of multi-unit activity recorded from the inferior colliculus of young and aged Fischer-344 rats. *p < 0.05. (Figure modified from Parthasarathy et al., 2018).