  Infrared reflectance measurements were made with light polarized along the a-
and c-axis of both superconducting and antiferromagnetic phases of electron
doped Nd$_{1.85}$Ce$_{.15}$CuO$_{4+\delta}$. The results are compared to
characteristic features of the electromagnetic response in hole doped cuprates.
Within the CuO$_2$ planes the frequency dependent scattering rate,
1/$\tau(\omega)$, is depressed below $\sim$ 650 cm$^{-1}$; this behavior is a
hallmark of the pseudogap state. While in several hole doped compounds the
energy scales associated with the pseudogap and superconducting states are
quite close, we are able to show that in Nd$_{1.85}$Ce$_{.15}$CuO$_{4+\delta}$
the two scales differ by more than one order of magnitude. Another feature of
the in-plane charge response is a peak in the real part of the conductivity,
$\sigma_1(\omega)$, at 50-110 cm$^{-1}$ which is in sharp contrast with the
Drude-like response where $\sigma_1(\omega)$ is centered at $\omega=0$. This
latter effect is similar to what is found in disordered hole doped cuprates and
is discussed in the context of carrier localization. Examination of the c-axis
conductivity gives evidence for an anomalously broad frequency range from which
the interlayer superfluid is accumulated. Compelling evidence for the pseudogap
state as well as other characteristics of the charge dynamics in
Nd$_{1.85}$Ce$_{.15}$CuO$_{4+\delta}$ signal global similarities of the cuprate
phase diagram with respect to electron and hole doping.
