Is the third dimension the memory of the fourth dimension utilised in the nature of perception?
Perception requires subject, object and knower.
Memory is related to identity, as is really just a change in perception
The 3 dimensions are length, width and height, the 4th dimension being time.
To answer the above question we can use an example of a cylindrical shape:
The eye actually sees only a 2 d image from the side but memory constructs the 3rd dimension that is produced over time (the 4th dimension).
Again, looking head on only the mouth of the cylinder would be visible:
So perception involves 4 dimensions. A useful exercise would be to look at 3-D objects in 2-D for a set time. This disrupts our habitual pattern of looking at the world.