An extremely low body temperature can cause the heart to beat so slowly that a pulse may be difficult to find.

VOA: special.2009.12.30

Now let's talk for a moment about the idea of pulse in music and the beat in the music and rhythms in music.

接下来我们花点时间,说一下音乐的律动这个概念,还有音乐的拍,和音乐的节奏

耶鲁公开课 - 聆听音乐课程节选

Remember we were talking about beat, which is the regular pulse, the pulse of life, the pulse of music, that comes at regular intervals.

我们讲到了节拍,节拍是一种有规律的律动,就像生命的律动一样,这是音乐的律动,节拍表现为有规律的间隔

耶鲁公开课 - 聆听音乐课程节选