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Figure 3 | Journal of NeuroEngineering and Rehabilitation

Figure 3

From: Revealing spatio-spectral electroencephalographic dynamics of musical mode and tempo perception by independent component analysis

Figure 3

Averaged spectral dynamics for IC clusters in response to musical mode and tempo. (A-D, left) The centroids of equivalent dipole locations of selected IC clusters are projected onto the MNI brain template. (A-D, right) The averaged time courses (across music excerpts, left plot) and the averaged mean values of the time courses (across excerpts and time points, right plot) of cluster spectra. The red lines indicate the spectral changes in music with major mode/fast tempo, whereas the blue lines represent the spectral changes in music with minor mode/slow tempo. Note that the first five seconds of 30s music presentation was removed for spectral baseline correlation. Music in major mode significantly induced (A) higher right sensorimotor (x = 35, y = -26, z = 45) delta power (F(1,12) = 7.15, p < 0.021) and (B) lower superior parietal (x = 6, y = -56, z = 64) theta power (F(1,12)=9.87, p < 0.009) versus music in minor mode. Music in fast tempo significantly induced (C) lower right sensorimotor alpha power versus music in slow tempo (F(1,12) = 5.68, p < 0.035). (D) The superior parietal delta exhibited insignificance in response to musical mode changed (F(1,12)=0.01, p = 0.909), which was used for comparing the superior parietal theta (B).

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