Cortical depth analysis of the frequency preference and tuning width. (A) Spatial distributions of the averaged z-scores on the right hemisphere, with the black contour denoting the auditory cortex ROI. (B) Spatial distributions of the frequency preference at five representative cortical depths of the auditory cortex, with solid and dotted lines indicating the low- and high-frequency preference bands, respectively. (C) Spatial distributions of the tuning width at the auditory cortex, with the dotted contour indicating the region with a narrow tuning width. (D) Profiles of the frequency preference and its variabilities at five cortical depths. (E) Profiles of the tuning width and its variabilities at five cortical depths. In panels (D,E), error bars represent the standard error of the mean (SEM) across cortical locations in the auditory cortex ROI. The significance of the difference across cortical depths was quantified by one-way ANOVA. freq = frequency, TW = tuning width, oct = octave, WM = white matter.