Topics: Optical illusion, The Spinning Dancer, Sensory system Pages: 3 (749 words) Published: December 5, 2013

The spinning dancer illusion

Sensation is the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment. Perception is the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events. My lab/activity is

the spinning dancer illusion which was originally created by nobuyuki kayanara. The illusion was related to bistable perception in which an ambiguous 2-dimensional figure can be seen in from two different perspective, but it is commonly mistaken to be a scientific personality test of right brain/left brain dominance. The spinning dancer is an optical illusion, an optical illusion is an object causing a false visual impression. These kinds of optical illusions are always fun. What they reveal is how our brain processes visual information in order to create a visual model of the world. The visual system evolved to make certain assumptions that are almost always right (like, if something is smaller is it likely farther away). But these assumptions can be exploited to created a false visual construction, or an optical illusion.By looking at the video, focusing on the shadow or some other part, you may force your visual system to reconstruct the image and it may choose the opposite direction, and suddenly the image will spin in the opposite direction. There are two simple ways to make the dancer switch by just simply blinking, or just looking at the dancers leg or another part of her body.

Loftous (1975) investigated how presenting new information can change memory. In her study, students were shown a film of an automobile accident and then asked how fast the white sports car was going when it passed the barn. Other subjects were asked the same question without mention of the barn. Although there was no barn in the film, 17% of the subjects who heard the barn mentioned reported seeing one in the film. (One IV, One DV)

IV: new...
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