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Culture and Personality
(Psychological Anthropology)


 Spring 2015 Calendar
Wednesday, 01 October 2014, 09:44 (09:44 AM) CDT, day 274 of 2014
Mustard seed.

Magic Eye©
Science, Optics



Optical Illusions

see also
 Reality
 Culturally Constituted Behavioral Envoronments (CCBE)
and Species Specific Behavioral Environments

 Altered States of Consciousness (ASC)

 Bibliography

Wikipedia

  Optical illusions
Category: Optical illusions

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In the News . . .

Take a look . . .

Take several . . .

 

There are, of course, the standard Müller-Lyer Illusions . . .

"Which line is longer?"


Müller-Lyer Line-length Illusion




Müller-Lyer line Illusion . . .

"Which line is longer?"
Müller-Lyer Line-length Illusion



Watch the next three images "move" . . .

Optical illusion stress test.



Optical illusion stress test.



Optical illusions, circles.



The square A is exactly the same shade of gray as square B.
See checker shadow illusion.
  (Wikipedia)
Optical illusion grey square

Prepared for Wikipedia by Adrian Pingstone in January 2004, based on the original created by Edward H. Adelson. See also Wikipedia Same color.(Wikipedia)


De-constructing the illusion.
  (Wikipedia)
 Optical illusion grey square deconstructed
 Optical Illusions -- Wikipedia



For more information on grey squares and related illusions see . . .

Making Sense of Sensory Information
with Dale Purves, M.D.
(Neuroscience Series)
(37 min, 2008, UM Duluth Library Multimedia QP376 .M35 2007 DVD)

"What we see is not what the world really is and that is counterintuitive."

Context Makes the difference

Making Sense of Sensory Information -- Davidson Films
YouTube Trailer

Making Sense of Sensory Information

John Locke -- Wikipedia
David Hume -- Wikipedia
George Berkeley -- Wikipedia

add René Descartes
-- Wikipedia

cf., Rashomon Effect

Rashomon Effect -- Wikipedia


Selective Attention and Lifeguards


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Stare at this photo for a few seconds.
Which way is the man looking ? . . .

Optical Illustion: Man turning his head.

Who's holding whom in this picture ? . . .
Optical Illustion: Man turning his head.



In which direction is the dancer turning ? . . .

Can you get her to reverse her direction ?

Spinning Optical Illusion

  Optical Illusions -- Wikipedia


In which direction are the cubes moving ? . . .

Spinning Optical Illusion

  Optical Illusions -- Wikipedia


How Many People are there in this picture ? Count them . . .

Wait a minute, then check again . . .
Count-the-people Illusion





And don't forget to check on the "Beer Goggles" . . .

 beer goggles, before and after beer



 

"Special Effects"
Environments

Shrek 3D

Shrek 3D


Shrek 3D

Shrek 3D

Barack and Michelle Obama, along with their party, watch the commercials during Super Bowl XLIII in the White House theatre using ColorCode 3D.

Barack and Michelle Obama, along with their party, watch the commercials during Super Bowl XLIII in the White House theatre using ColorCode 3D.
Wikipedia

Pocket stereoscope with original test image. Used by military to examine stereoscopic pairs of aerial photographs.

Pocket stereoscope with original test image. Used by military to examine stereoscopic pairs of aerial photographs.
Wikipedia
Shrek 3D

Wikipedia


3D football image

3D Football
 
3D perception problems, Consumer Reports

Consumer Reports



For the next illusion one you need to use the YouTube version . . . it's worth the trouble . . .

"Best Optical Illusion I Have Ever Seen" --

"I promise this isn't a scare video. Just keep focusing on the dot. And if you don't get the illusion, watch it again, without looking at the dot."

"The second picture was grey the entire time and your mind just put all those colors there."

For this one you need to use the YouTube version . . . 

 http://www.youtube.com/watch?v=7knnO4vKgXg&NR=1

and it will start off like this . . .
stare at the dot (on the YouTube version) at the center of the image . . .

 House Illusion




This photo, colored, should "appear" . . . but you need to use the YouTube version . . .

 House Illusion



 

Go to the "Magic Eye" page and look at the Image of the Week
until you see the 3D image

Click on the image on the magic eye page for help, if necessary

 Unidentified White Horse, Wikimedia
  Magic Eye©
(solution)



Take the Selective Attention Tests
(Be sure to take both tests--they're short)

Read and follow the directions carefully

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Shake Your Head to See the Picture . . .

Shake-your-head optical illusion.
 
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Bibliography


© 1998 - 2014 Timothy G. Roufs    Envelope: E-mail
Page URL: http:// www.d.umn.edu /cla/faculty/troufs/anth4616/cpopticalillusions.html
Last Modified Thursday, 02 May 2013, 14:05 (02:05 PM) CDT, day 122 of 2013
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