internal rhythm

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3963504/
被殻は内的なリズムの生成に関係しているという

Grahn and Rowe found that the putamen responded differently to different beat sequences. When there was no beat, the putamen was not active. Similarly, when participants heard a new beat, the putamen did not respond. By contrast, when participants heard the same beat twice, the putamen was highly active. It was also active, but to a lesser extent, when the sequence involved the same beat played at different speeds.

These results suggest that the putamen was not responding to the presence of a beat per se, but was processing the continuation of the beat across the sequence. This supports the theory that the putamen is involved in our ability to recreate a beat in our head. Prior to this study, researchers knew that the putamen was involved in beat processing, but they did not know what its specific role was. The work of Grahn and Rowe shows that the putamen is important for the mental generation of a beat.

同じリズムを検出できる能力は相手が見えない状況で敵ないし獲物を同定できる能力として発達したのだろう。したがって犬や猫でも同じ機能が存在すると期待できる。うちの猫がどんなリズムが好きか検討してみてもいいだろう