2. Affective
• Affective is a word that crops up a lot in psychology—it means having
to do with emotions or moods. Affective disorders are characterized
by mood swings.
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3. Visual illusions
• A visual illusion refers to a percept that is different from what would be
typically predicted based on the physical stimulus. Illusory perception is
often experienced as a real percept.Apr 25, 2016
• The Ebbinghaus illusion, or Titchener circles, is an optical illusion of
relative size perception. The two orange circles are exactly the same size;
however, the one on the right appears larger.
• The causes of visual hallucinations and illusions can be grouped into several
major categories: migraine, release phenomena (in the setting of impaired
vision), entoptic (ocular) phenomena, alcohol and drug-related, seizures,
neurogenerative disease, central nervous system lesions, psychiatric
disease, and narcolepsy.
5. hallucinations
• A hallucination is a false perception of objects or events involving your senses: sight, sound, smell,
touch and taste. Hallucinations seem real, but they're not. Chemical reactions and/or
abnormalities in your brain cause hallucinations.
• Visual hallucinations. Visual hallucinations involve seeing things that aren't there. ...
• Olfactory hallucinations. Olfactory hallucinations involve your sense of smell. ...
• Gustatory hallucinations. ...
• Auditory hallucinations. ...
• Tactile hallucinations.
• Example-You may have hallucinations if you: hear sounds or voices that nobody else hears. see
things that are not there like objects, shapes, people or lights. feel touch or movement in your
body that is not real like bugs are crawling on your skin or your internal organs are moving
around.
