Viewed by human subjects, this visual stimulus gives a percept of a rigid, square target protruding from the background plane.
The motion-parallax-defined depth was created by the differential motion between the dots on the surface of the protruding areas and the ones on the background.
First the loads on the ends of the membrane which protruded outside the tunnel were determined by assuming that wind-off conditions applied there.
However, to many, the words only protrude unacceptably.
Part of the filler wire protruded from the final sac.
The animal's task was always to make a saccadic eye movement to the target, the area that appeared protruding the most toward the viewer.
The completion of germination was defined as the radicle visibly protruding from the testa.
These processes may be protruded or retracted slowly or within a couple of minutes.
