Thesis Help: Psychology + Videogames

I'm currently putting together my proposal for my graduate capstone thesis, and I'm hoping someone here on the forums might be able to help me out. I won't go into much detail, but the proposal I'm working on is about looking at the player's experience as game narrative. I've found a lot in videogame writing and design books that make reference to it, but I need material on the psychology of the human mind as to how those experiences can become story, and be memorable.

Basically what I need are books (or references) for how memory works (ie: why do we remember certain things, or experiences, over other things, or experiences? What causes certain memories to be more prevalent then others?) Also I've heard there is a branch of psychology relating to stories and storytelling, and information (or books) on that would be helpful as well.