🚀 go-pugleaf

I'm doing some research on user interfaces.  I'm exploring solutions to
a problem once referred to as "visual momentum", i.e. the ability to
maintain contextual continuity when going from one screen to another.
David Woods wrote the article which coined the term "visual momentum",
in the International Journal of Man-Machine Studies in 1984.  
I'd like to explore solutions to presenting data in meaningful ways, in ways
which are cognitively intuitive to the user, and which permit the user to
maintain an idea of the general context within which the data is structured.
And I'd like to be able to solve the problem of users getting
lost within complex menu structures.  My application is medical, but these
problems are general ones found in any application area. 

I'm wondering if anyone out there has been thinking about these same issues.
If so, any ideas?  Any good references I can look up?

Thanks!
	-Aamir