In the canadian film webzine "offscreen" Donato Totaro published an introduction to Gilles Deleuze's cinema books. Here is the link to the second part that is elaborating on the concept of the movement image:
http://www.horschamp.qc.ca/9903/offscreen_essays/deleuze2.html

"In his second book Deleuze tackles temporality in a more direct fashion. Although the book is considerably longer than the first (344 to 250 pages), Deleuze does not propose rigid or neat classifications. The central shift remains from a cinema that defined itself primarily through motion to one that concerned itself more directly with time. The time-image moved beyond motion by freeing itself of the "sensory-motor" link to a "pure optical and sound" (tactile) image. This emancipating of the senses concurred with a "direct relation with time and thought" ( Cinema 2 , 17). Deleuze spends considerable space discussing memory, especially Henri Bergson's views on memory, because it forms an important part of the second book's central concept: crystal-image (or time-image). In fact, one gets the sense that Deleuze's two books align themselves with the Bergson book that most influenced Deleuze, Matter and Memory : movement-image (matter) and time-image (memory)."