It is really wonderful to know that juggling enhance brain development. Juggling is a skill involving moving objects for entertainment or sport. The most recognizable form of juggling is toss juggling, in which the juggler throws objects up to catch and toss up again.
The team from Oxford’s Department of Clinical Neurology used a diffusion MRI which is able to measure the movement of water molecules in the tissues of the brain.
In the journal, Nature Neuroscience, the scientists say they saw a 5% increase in white matter – the cabling network of the brain. The people who took part in the study were trained for six weeks and had brain scans before and after.
Long term it could aid treatments for diseases like multiple sclerosis.
“It’s extremely exciting to see evidence that training changes human white matter connections” says Professor Cathy Price, Wellcome Trust Centre for Neuroimaging.
Diffusion MRI
The team from Oxford’s Department of Clinical Neurology used a diffusion MRI which is able to measure the movement of water molecules in the tissues of the brain.
The signal changes according to how many bundles of nerve fibres there are and how tightly packed they are.
Changes in grey matter, where the processing and computation in the brain happens, have been shown before, but enhancements in the white matter have not previously been demonstrated.
Three ball cascade
The scientists studied a group of 24 healthy young adults, none of whom could juggle. They divided them into two groups. One of the groups was given weekly training sessions in juggling for six weeks and was asked to practice 30 minutes every day the other 12 continued as normal.
After training, the 12 jugglers could perform at least two continuous cycles of the classic three ball cascade.
Both groups were scanned using diffusion MRI before and after the training.
At the six week point, a 5% increase in white matter was shown in a rear section of the brain called the intraparietal sulcus for the jugglers.
This area has been shown to contain nerves that react to us reaching and grasping for objects in our peripheral vision.
The red area shows the part of the white matter of the brain that is enlarged by learning to juggle.It is in the intraparietal sulcus at the back of the brain
There was a great variation in the ability of the volunteers to juggle but all of them showed changes in white matter.
The Oxford team said this must be down to the time spent training and practising rather than the level of skill attained.
Dr Heidi Johansen-Berg, who led the team, said: “MRI is an indirect way to measure brain structure and so we cannot be sure exactly what is changing when these people learn.
“Future work should test whether these results reflect changes in the shape or number of nerve fibres, or growth of the insulating myelin sheath surrounding the fibres.
“Of course, this doesn’t mean that everyone should go out and start juggling to improve their brains.
“We chose juggling purely as a complex new skill for people to learn.”
Dr Johansen-Berg said there were clinical applications for this work but there were a long way off.
She said: “Knowing that pathways in the brain can be enhanced may be significant in the long run in coming up with new treatments for neurological diseases, such as multiple sclerosis, where these pathways become degraded.”
As a brain fitness coach and author of Have A Ball Learning: How Juggling Helps Kids Overcome Their Learning Disabilities, I have spent the last eight years teaching kids with learning disabilities how to juggle. In addition to what was discovered in the Oxford study, juggling has already been proven to cause growth of new gray matter—making it the only exercise proven to increase both gray and white matter in the brain—measurable within just seven days! The nature of juggling involves several specific functions that improve the brain: by crossing the visual midline, it builds the communication between the right side and the left side of the brain (building the corpus collosum). By using peripheral vision, it activates the parasympathetic nervous system (that tells you to relax). Juggling stimulates the cerebellum, builds postural reflexes, and helps integrate primitive reflexes. Juggling builds focus and concentration and improves reading and math skills. You can read more studies of juggling’s benefits at http://www.HaveABallLearning.com.