We calculated SXCorr that quantified how well the shape of LFPcal matched to that of LFPobs, irrespective of difference in response magnitudes between the two LFP profiles for individual tone frequencies. For the example shown in Figure 4A, SXCorr peaked at 1 kHz the frequency at which the amplitude of LFPobs response also peaked (Fig. 4B). Up to 2.8 kHz, the SXCorr was above 0.8 and but it fell off at higher frequencies. Across all recording sites, SXCorr gradually decreased as the tone frequency departed from the BFMUA (Fig. 4C). At frequencies beyond 1 octave difference, median SXCorr were significantly different from that at BFMUA (bootstrap, two-tailed, P<0.05).
