I found this article and the cited research from Michigan State University very informative. It addresses different areas of activation within the brain during reading for pleasure, and reading technical information.
It also mentions the principle of “cognitive training”, in this case being able to shift focus effectively and completely between various items or tasks. This principle is closely related to the function and intent of Italic Bookmarks.
I hope you enjoy it:
This Is Your Brain on Jane Austen: The Neuroscience of Reading Great Literature | Open Culture
italic bookmarks 