via examiner.com
Alice-in-Wonderland-Syndrome, or AIWS, is a perceptual disorder where objects or people may seem to be out of proportion, different in size than they should be, colored strangely, or too far or too close away. The size disturbances include micropsia, where the object being looked at appears too small and macropsia, where objects seem too large. Sometimes, objects seem farther away than they should be, as in teleopsia.
If the problem is not in size or distance, it can even involve color, as in achromatopsia, where there is no perception of color. When the hallucination involves people, the person can appear too small, as in Lilliputian hallucinations (yes, this is the name of the disorder).
In a sufferer, the eye is normal and there are no defects that would lead to the perceptual distortions associated with the disorder. Instead, the problems lay in the brain. There are theories that the disorder can arise during Epstein-Barr viral infection, which causes infectious mononucleosis (IM).
Sufferers of chronic migraines have reported visual disturbances that occur prior to onset of migraine pain. AIWS is sometimes associated with these hallucinogenic migraines. The AIWS episodes can occur even without the pain of a migraine. It is not fully known why AIWS occurs, especially when it is in conjunction with migraines.
One other possible cause of AIWS is temporal lobe epilepsy. As the name implies, the temporal lobes of the brain are involved. The temporal lobes, which are at the sides of your brain, control the brain’s language center, and are an important area in auditory processing. Why AIWS may be associated with this form of epilepsy is also unknown.
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In a 
The term déjà vu is French and means, literally, “already seen.” Those who have experienced the feeling describe it as an overwhelming sense of familiarity with something that shouldn’t be familiar at all. Say, for example, you are traveling to England for the first time. You are touring a cathedral, and suddenly it seems as if you have been in that very spot before. Or maybe you are having dinner with a group of friends, discussing some current political topic, and you have the feeling that you’ve already experienced this very thing — same friends, same dinner, same topic.
Inattentional blindness is an inability to perceive something that is within one’s direct perceptual field because one is attending to something else. The term was coined by psychologists Arien Mack and Irvin Rock, who identified the phenomenon while studying the relationship of attention to perception. They were able to show that, under a number of different conditions, if subjects were not attending to a visual stimulus but were attending to something else in the visual field, a significant percentage of the subjects were “blind” to something that was right before their eyes.
