Have people discussed the field complementary to the ugh field? We might call these "mmm fields".

An "mmm field" could be thought of as a mental cluster that has a tantalizing glow of positive affect. One subtly flinches toward such a cluster whenever possible, which results in one getting "stuck" there and cycling through the associated mental sequences.

Among other things, it could be used to describe those troublesome wireheading patterns. I'm personally interested in using it in the post I'm writing on meditation.

The name is a nod to pjeby's "mmm test".