I imagine it could have something to do with the physical fixedness of a book. I can remember the positions of the line breaks in some of my favourite books as a child and it wouldn't surprise me if the physical layout of the words on the page (and how far through the book you are) somehow factored into the way the brain stores the memories of reading the book.

With an ebook you have the same little device with exactly the same dimensions for every book (no memorable covers or different formats) and there's no physical indication of how far through the book you are. And you can change the font size.

I think all these points are valid. As someone who spent the first 30 years of my life reading physical books, the transition to e-books has been difficult for a lot of the reasons you mention.

I wish the author was more specific on what "reading circuit development" means.

The frustrating thing about e-book reading devices is how slow they are. Flipping to the table of contents or flipping around the book just doesn't work. Mobile devices, tablets and computers are faster, but the experience still isn't as good a physical book. And then there are distractions.

That's a fair assessment. The brain doesn't store information so much as reproduce your experiences while reading during recall. It lets you relive, in part, the lighting, the angle, how heavy the book was, whether your edition had a defect on a particular page, the feel of the paper, the smell...

All of that comes in to play.

For my last read-through of Children of Dune (roughly a year ago now), I read it on the Kindle app on my phone. I remember the hotel room in Mumbai, the look of the text (white on a black background), the sun going down, and the characters moving through my mind. Would I have developed these recall skills if I hadn't spent my life reading paper books? I'm not so sure.

Just found this presentation online by Maryanne Wolf:

https://www.stjornarradid.is/media/menntamalaraduneyti-media...

See page 30 for the "reading circuit" diagram.

I think where you are in the book as you read along is another sensory impression that can form stronger memories about the book's contents.

I always have a sense of where to go back to to refresh some old ideas if my memory gets blurry. Knowing how far into the book it was already aids my recollection.

Yes, this 100% resonates with me.

Maybe there is a spatial element, as in a mental mapping that is done based on the location in the book both seen and felt in the hands.