The influence of possible additional (hidden) components of time on a
body's motion in the field of a gravitational wave is considered. Cont
rary to the one-time theory, oscillations of the body ''height'' and '
'width'' sizes in a plane perpendicular to the direction of the wave p
ropagation occur independently from one another. This peculiarity can
be used for the experimental check of emission of gravitational waves
with distinct time trajectories in cosmic cataclysms. An interesting a
nalogy between electromagnetic and gravitation quantities is discussed
in the context of time multidimension.