I have misplaced my iPhone. I search for it with my mind’s eye. In thoughts I trace my route through the house. Some people, such as Oliver Sacks, lack a mind’s eye. This is called aphantasia. At the other extreme are people with a super mind’s eye.
Let the sunshine in
How would we manage, if we could not visualise three-dimensional objects from flat two-dimensional diagrams? An amazing feat our brain performs. What role does pre-determined programming play in this? That is related to how the sun shines on us.
Hallucinations: seeing what you expect
Someone who is hallucinating will see things, whole scenes and events which are not actually there, and experience them as real.How can this be? Because you see what you expect, unless it is corrected by your perceptions. Which is where things can go wrong.
You look with your eyes, but see with your brain.
Are you sure you see the reality out there? That is the question. The brain does not receive an image like a camera does. The brain is not a passive processor. What you see is constructed in the brain. How do you see with your brain?
What is colour? How blue can look white…
How do we see colour? Can white look blue and vice versa? And does it matter which word you use for a colour?