The song moves to a slow rhythm, like an early processional dance of the period called a pavane. Hundreds of years ago. Focus: Time passing; fire safety; musical scales; simple rhythm-patterns.

The researchers wanted to see if the black-and-white lemurs had categorical rhythm — the ability to create different types of rhythm patterns.

The rhythmic patterns of oscillations may also be useful in developing better brain-machine interface technology for quadriplegic individuals to operate prosthetics, Saleh said.