How does the brain perceive e-books?

Here's an interesting article from The New York Times titled "Does the Brain Like E-books?" Here's a link to the article: http://roomfordebate.blogs.nytimes.com/2009/10/14/does-the-brain-like-e-books/?ref=technology

It asks 4 different specialists to give their take on how the brain perceives e-books versus print books and issues like whether comprehension rates are the same when reading e-books. There are some interesting observations, such as people tend to read much slower when reading digital copy and the fact that it is much harder to focus when reading digital material...particularly online when you can check your email every other minute simultaneously.

Maybe e-books are just next in the long evolution of different mediums by which we read...be it long scrolls, bound novels, newspapers, magazines, etc. Our brains will slowly adapt to reading e-books just as it has reading print books.