  Motivated by earlier studies of artificial perceptions of light called
phosphenes, we analyze traveling wave solutions in a chain of periodically
forced coupled nonlinear oscillators modeling this phenomenon. We examine the
discrete model problem in its co-traveling frame and systematically obtain the
corresponding traveling waves in one spatial dimension. Direct numerical
simulations as well as linear stability analysis are employed to reveal the
parameter regions where the traveling waves are stable, and these waves are, in
turn, connected to the standing waves analyzed in earlier work. We also
consider a two-dimensional extension of the model and demonstrate the robust
evolution and stability of planar fronts and annihilation of radial ones.
Finally, we show that solutions that initially feature two symmetric fronts
with bulged centers evolve in qualitative agreement with experimental
observations of phosphenes.
