  A non stationary state in the one-dimensional infinite square well formed by
a combination of the ground state and the first excited one is considered. The
statistical complexity and the Fisher-Shannon entropy in position and momentum
are calculated with time for this system. These measures are compared with the
Heisenberg uncertainty relation, \Delta x\Delta p. It is observed that the
extreme values of \Delta x\Delta p coincide in time with extreme values of the
other two statistical magnitudes.
