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I've never contemplated the brain's ability to "fill in the gaps" when it comes to identifying an object, but indeed as it was demonstrated in class with the wall, there is a mechanism by which we can associate the borders or rather the beginning and the end of an object, and to conclude that everything in between belongs to that object as well.

I'm fairly comfortable attributing this ability to the I-function, however it then had me thinking about individuals who have suffered a stroke and can no longer verbally express what an object is. Much of this is explained by possible damage to Wernicke's area which is responsible for language skills, however strokes also often involve damage to the visual field as well. Is the inability to verbally express what an object is, actually an injury to the I-function, where once again the role of corollary discharge signals have been challenged by an abrupt interruption in the pathway of signal transduction?