Monkeys Exhibit Rhythm Through Metronome Training

A recent study published in the journal *Science* has revealed that trained macaque monkeys can synchronize their finger taps to the beat of human music. Conducted by researchers from Kyoto University, the study challenges the long-held belief that only vocal-learning animals, such as parrots, possess the ability to keep a musical beat. The findings suggest that the capacity for rhythmic synchronization may be more widespread among non-human species than previously understood.

Monkeys can tap to beat of human music after metronome training, study findsTrained monkeys can tap to a beat, challenging notions of musicality

The research team trained the macaques to tap a surface in time with a metronome. Initially, the monkeys were rewarded for tapping at intervals that matched a four-beat signal, with intervals randomly set between 0.5 and 0.9 seconds. After extensive training involving hundreds of repetitions, the monkeys learned to maintain a steady beat. When exposed to human music, they began tapping autonomously, adjusting their rhythm to match the tempo of the tracks, including an excerpt from the song "Everybody" by the Backstreet Boys.

Trained monkeys can tap to a beat, challenging notions of musicalityMonkeys can tap to beat of human music after metronome training, study finds

The trained macaques demonstrated an ability to adapt their tapping to various musical tempos, even when the music was manipulated to start half a beat off. This indicates that their rhythmic responses were not merely reactions to external stimuli but rather a learned behavior that allowed them to follow the musical structure. The study's results imply that other non-human species may also possess latent rhythmic capabilities.

Trained monkeys can tap to a beat, challenging notions of musicality

In a commentary accompanying the study, Princeton University neuroscientist Asif Ghazanfar and musicologist Gavin Steingo acknowledged the significance of the findings but noted their limitations. They emphasized that the rhythmic ability observed in the macaques is not a natural behavior but one conditioned through external rewards. They further pointed out that in their natural habitats, macaques do not have the opportunity to learn such rhythmic behaviors, raising questions about the implications of this discovery for the evolution of music.

Trained monkeys can tap to a beat, challenging notions of musicalityMonkeys can tap to beat of human music after metronome training, study finds

The study contributes to a growing body of research indicating that music can influence animal behavior and emotions. Previous studies have shown that dogs and cats exhibit calming responses to classical music, suggesting that music may serve as a form of emotional regulation for various species. The exploration of rhythmic abilities in non-human animals opens new avenues for understanding the evolutionary roots of music and rhythm.

Trained monkeys can tap to a beat, challenging notions of musicality

While the study presents compelling evidence of rhythmic synchronization in macaques, it also highlights the need for further research to explore the natural contexts in which such abilities might manifest. The limitations of the study, particularly regarding the artificial training environment, warrant caution in drawing broad conclusions about the innate rhythmic capabilities of non-human animals.

Monkeys can tap to beat of human music after metronome training, study finds

• “It shows that macaques can have rhythm if they are trained,” — Asif Ghazanfar, Neuroscientist, Princeton University

Trained monkeys can tap to a beat, challenging notions of musicality

• “The observed ability is not a natural behavior but one conditioned through external rewards,” — Asif Ghazanfar, Neuroscientist, Princeton University

Trained monkeys can tap to a beat, challenging notions of musicality

• “In their natural habitat, they have no opportunity to learn such behaviors.” — Asif Ghazanfar, Neuroscientist, Princeton University

Trained monkeys can tap to a beat, challenging notions of musicality