Additional file 12: Figure S3.

Mean spectral power density of the local field potential (LFP) signals recorded in the hyperpallium shows a peak at 0.45 Hz. The mean (+/− SEM) was calculated over the power spectra from all hyperpallium recordings (n = 11 birds), selecting the same channel near the center of the electrode array. Power spectra were calculated using Welch’s method, using 10-s time windows and 99% overlap.

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Beckers et al. BMC Biology 2014 12:16   doi:10.1186/1741-7007-12-16