Independent of what is happening around you in the outside...
Independent of what is happening around you in the outside world, humans constantly have internal activity in the brain.
![Susumu Tonegawa Quote About Constantly, Happening, Humans, Internal: Independent Of What Is Happening...](http://qt.azureedge.net/resources/quotes-images-large/independent-of-what-is-happening-around-you-in-the-outside-world-humans-constant-3fdbc98abb32493fcf22465e607de7de.jpg)
Independent of what is happening around you in the outside world, humans constantly have internal activity in the brain.