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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: J Exp Anal Behav. 2016 Jan;105(1):211–229. doi: 10.1002/jeab.190

Fig. 4.

Fig. 4

Screen captures of the two new digital terrains in which topography varied and their correct objects as tested in Experiment 2. The topography of the terrain was sinusoidal and two ridges (“hilltops”) can be seen in these examples. As the camera progressed through these virtual environments, its perspective changed (i.e., pointing upwards or downwards) depending on its location, to ensure the visibility of the objects in upcoming portions of the streaming displays.