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. 2017 Oct 30;8:1894. doi: 10.3389/fpsyg.2017.01894

Figure 8.

Figure 8

The origin of scale/emotion associations in music. Two models are presented for how scale/emotion associations may have evolved, either (A) as a sequential occurrence, or (B) as a joint occurrence. In both cases, the ultimate outcome is coordinated group emotional expression. The figure is meant to represent an evolutionary timeline, with time progressing from left to right.