Hi Ryan,
There are some papers around in this area... i have pasted a few that I used in my early literature review stage. I am still in early stages of my research and dont have any published work yet..
As for your question if you can detect differences in attention with different types of pedagogy, ABSOLUTELY. There are evidences from early research that there is a clear distinction on how our brain waves react to a "passive" vs "active" class ( I am using the work passive loosely here). This area of using bio sensors to detect attention or enhance how we learn ( both giving control to learner or educator) is vastly unexplored. There are so many branches of application that it is sometimes hard to narrow down!!