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"Subliminal perception": (1960s) subliminal perception was controversial, asserted by advertising professionals. There is no evidence for them.
Nevertheless, subtle perception: when two objects are shown briefly at a precisely determined distance,...
...both objects can be seen, otherwise only one.
E.g. Question: what face have I already shown to you: here the answers were random.
On the other hand:
"Which face do you prefer?": Here the test persons chose the face, which they had previously "subliminally" seen.
Brain/Consciousness/Frith: Brain scanners showed that an object can cause a change in brain activity without the person being aware of it. (In the Amygdala).
Thesis: "Our brain does not tell us everything it knows."
Perception/Frith: Thesis: Perception is a fantasy which is in harmony with the world.
Blind spot/brain/perception/Frith: the brain invents something for the empty space.
E.g. The alphabet is presented very quickly. Then you are sure to have seen the letter A, even if the letter B has appeared instead.
Wie unser Gehirn die Welt erschafft Heidelberg 2013