The object shown in the figure below is a ________ and the dark circles, or "lanes," are mostly likely due to ________. 
Definitions:
Representation
The act of standing for or symbolizing something else, or an accurate depiction of something in a particular medium.
Mental Picture
A visual representation formed in the mind, which can be recalled or imagined without the physical presence of the object.
Object
In general usage, any material thing that can be seen and touched. In psychological contexts, an object can refer to a target of attention or affection.
Piaget
Jean Piaget was a Swiss psychologist known for his pioneering work in the study of child development and his theory of cognitive development that explains how children construct a mental model of the world.
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