Practice, Rest, Practice, Rest, Practice, Rest

To find out how, researchers turned to an imaging technique called magnetoencephalography, or MEG. The unique advantage of MEG is that it allows scientists to observe neural activity across the entire brain with millisecond time resolution, which is crucial for investigating very fast widespread brain dynamics.

The researchers had 30 volunteers sit inside an MEG scanner and asked them to type the sequence 41324 on a keyboard as quickly and accurately as possible for 10 seconds, then rest for 10 seconds, then repeatwhile the researchers monitored their neural activity.