MRI shows meditation changes brain structure in 8 weeks
I would like to see these sorts of studies controlled with a group that rather than meditate for 30 minutes a day do anything that requires concentration for 30 minutes a day. So e.g. writing, learning an instrument, etc. I would assume you would get similar changes in brain functioning as meditation. In other words it would be interesting to see if there is something special about meditation, or if its benefits can be achieved by any sort of daily period of sustained/enhanced concentration.