  A generalized antiferromagnetic approach to the Mott transition is analyzed
with special emphasis on electron doped cuprates, where evidence for electronic
phase separation is weak or absent. Fluctuations are incorporated via a
self-consistent renormalization, thereby deriving a `nearly-antiferromagnetic
Fermi liquid' susceptibility. The calculation is sensitive to hot-spot effects.
Near optimal doping, an approximately electron-hole symmetrical Mott gap
collapse is found (quantum critical points). The calculation satisfies the
Mermin-Wagner theorem (Neel transition at T=0 only -- unless interlayer
coupling effects are included), and the mean-field gap and transition
temperature are replaced by pseudogap and onset temperature. The resulting
susceptibility is used to calculate the doping dependence of the photoemission
dispersion, in excellent agreement with experiment. Discussions of interlayer
coupling, doping dependence of $U$, and extension to a three-band model are
included.
