A few weeks ago, in an inset session at a wonderful school with beautiful inclusive approaches in their group teaching, I mentioned that rats have the same limbic structures as humans. The limbic system is the part of the brain that deals with our mammalian instincts. These keep us in tune with social information, such as social status and hierarchy, protecting and nurturing our children, bonding with sexual partners and managing affiliation. It’s a logical assumption that if we share these limbic structures, rats like humans should be able to keep time with a musical beat - or their equivalent of that. So, it was no surprise to learn that Japanese researchers have shown that rats can indeed bob along and keep time with a musical beat.
It was back in the 1980s, when American scientists first discovered the genes that determined the rhythm of the mating song of fruit flies. If we think of rhythm as a musical trait exclusive to humans, these findings in rats and flies are simply amusing, novel or entertaining. On the other hand, the bigger picture behind these findings would suggest that the natural world is inherently structured by environmental and behavioural patterns organised by rhythm. If we think of rhythm as a system of ratios, proportions and repetition, then the math of rhythm is obvious. There are cycles and rhythmic flows in tides and weather systems and indeed, migration patterns follow these cycles. In individual organisms, as well as in shoal, pod, flock and herd movement, rhythmic patterns underpin locomotion and communication. Even a human infant’s stepping reflex is organised around the inherent rhythmic systems that we share with many other species.
We humans are particularly happy when our stylised rhythms achieve a hypnotic effect, for example in Queen’s ‘We will rock you,’ - one of the songs used by the Japanese scientists to detect the sensitivity to rhythm in rats. Halfway through the Rhythm for Reading programme, this same rhythmic pattern appears and is always greeted with enthusiasm by teachers and children as a fun part of the reading intervention. Look out for the next post, which explains the connection between hypnotic rhythm, flow states, reading fluency and reading comprehension.