Tactile stimuli are presented underneath the fingertips, and are therefore occluded from others.
After the Outcome stage, two yellow arrows, one arrow pointing up and the other pointing down, were presented underneath the partner's photograph, indicating that the self-paced Change stage began.
Visualizations at the tube-louver junction showed that in the transition part between the angled louver and the flat landing a vortex is present underneath the louver surface which propagates towards the angled louver.
The surface of B. anthracis, the causative agent of anthrax, is unusually complex: an S-layer is present underneath a poly-γ d-glutamic acid capsule, and the two structures are independent (Mesnage et al., 1998).
Condition C: a flat board and a cup were presented; the reward was hidden underneath the board causing an inclination of the board.
Newly formed bone was present underneath both the upper and lower parts in the 1 and 3 MHz groups.
If this interpretation is correct, we would also predict that head-dipping would be greater in the presence of objects; however, there was no evidence of an increase in head-dipping behaviour when objects were present underneath the holes.
During the first set of five trials, no objects were present underneath the holes of the apparatus; during the second set of five trials, an object was placed on the floor under each of the four holes prior to the start of the trial, approximately 20 cm below each hole.
Condition B: The pre-inclined board and the flat board were presented, and the food was hidden underneath the flat board; thus, both boards were inclined after the hiding of the food.
Condition D: The flat board and the cup were presented, and the food was hidden underneath the flat board; thus, the flat board was inclined after the hiding of the food, whereas the cup remained unchanged.
