Hi Matt,
the caption animations are defined in the module, these are CSS3 animations. You can modify them to your needs, but please be aware that you need to do these modifications directly in the module file.
Also, you need good knowledge about CSS3 / CSS3 Animations.
You can find more information e.g. on w3schools.com, they have a really good section about CSS3 2D/3D Transformations and Animations. You can find this here:
w3schools.com/css3/css3_2dtransforms.asp and here:
w3schools.com/css3/css3_3dtransforms.asp resp. more information about CSS3 Animations here:
w3schools.com/css3/css3_animations.asp
Please be also aware that you need to define these animations for mozilla, webkit, opera, microsoft and generally, or your animation may not work on all browsers.
maike