Related to my previous question: http://cogsci.stackexchange.com/questions/4094/improved-typing-as-a-result-of-slight-movement

For context: slight movement (<1 inch in any direction) improves typing, piano-playing, and writing, among other things. I believe this is because the continuous movement helps induce a flow state. Additionally, any mistakes made during the activity (a misspelling, an inappropriate piano note, etc) are more easy to recover from.

I am now curious as to what neural processes could be taking place here - by what process does this slight movement ease the primary activity, remove or reduce errors, and induce a flow state? What mechanism of the human body allows this 'cross-entrainment'?

For bonus points, what neural activity is taking place during a flow state itself?

Related to my previous question: https://cogsci.stackexchange.com/questions/4094/improved-typing-as-a-result-of-slight-movement

For context: slight movement (<1 inch in any direction) improves typing, piano-playing, and writing, among other things. I believe this is because the continuous movement helps induce a flow state. Additionally, any mistakes made during the activity (a misspelling, an inappropriate piano note, etc) are more easy to recover from.

I am now curious as to what neural processes could be taking place here - by what process does this slight movement ease the primary activity, remove or reduce errors, and induce a flow state? What mechanism of the human body allows this 'cross-entrainment'?

For bonus points, what neural activity is taking place during a flow state itself?