There is no one survey that is both up to date and comprehensive but the following materials are good starting points.
Roughly speaking Constructivism says that mystical experiences are culturally constructed. The leading advocate of this view is Steven Katz. Opposed to this is the purist view which says that mysticism is based on an unmediated experience. The leading advocate of this view is Robert Forman.
Note: Andrew Newberg is a Haverford graduate and is currently at PENN.