Figure 1.

Sample trial from an oddball detection task. Participants must choose which of the four images depicts a unique spatial configuration of three objects. Three of the images depict identical spatial arrays of three objects (i.e., all objects are in the same location) taken from different viewpoints. The fourth image, outlined in red, depicts a unique configuration of the objects, as two (plant and lamp) have swapped positions. x-, y-, and z-axes have been included for demonstrative purposes only. Image created using Google SketchUp 2014.