1 These thio relaxers have a gentler action than other relaxer chemicals, so are a popular option when you want effective straightening with a lower risk of damage to the hair. 2  Japanese straightening systems use thio based relaxers.ons. 1  As the name suggests, this technique relaxes hair rather then leaving it poker straight, so if you want absolute stick straight and frizz-free hair, this method may not be for you. 2  As with every chemical process, the ever present risk of damage is there.
Types of Optical Illusions. There are currently three types of optical illusions: literal illusions, cognitive illusions, and physiological illusions. Each of these illusions trick our brain into misunderstanding what we see in various ways. A cognitive illusion happens when the brain perceives an object based on prior knowledge or assumptions.
A cognitive illusion can be defined as the viewer's knowledge and assumptions about the world, or unconscious inferences. There are three categories of cognitive illusions: ambiguous illusions, distorting illusions, and paradox, or fiction, illusions. Ambiguous illusions are images or objects that allow for the viewer to have two valid interpretations of what the object represents or what it actually is. The viewer is usually able to mentally visualize one interpretation right away and eventually the second, after some time.