Optical Illusions

[canninator]

Don't forget to go back to Post #1 and try that one too. True, my picture doesn't have Golden Bozos, but it is a lot harder than it seems.

There are no spirals, only concentric circles? This seems like a cop out though.

[Scarpia]

I don't know if this counts.  I know some question the merits of this test, but this is supposed to determine how you think. 

Apparently, if you deem the image to be rotating counter-clockwise, it means you are a left brain thinker.  If you see the image rotating clockwise, you are more of a right brain thinker.




I definitely am a left brain thinker, and I definitely see the image rotating counter-clockwise.  Although, after awhile, if I look away and look back at the image, for a brief moment, I can see the image turning clockwise.  Most of the time though, it is turning counter-clockwise for me.  My wife always sees it turning clockwise.


LEFT BRAIN FUNCTIONS
uses logic
detail oriented
facts rule
words and language
present and past
math and science
can comprehend
knowing
acknowledges
order/pattern perception
knows object name
reality based
forms strategies
practical
safe

RIGHT BRAIN FUNCTIONS
uses feeling
"big picture" oriented
imagination rules
symbols and images
present and future
philosophy & religion
can "get it" (i.e. meaning)
believes
appreciates
spatial perception
knows object function
fantasy based
presents possibilities
impetuous
risk taking

I don't want to discourage anyone from looking at pictures of spinning naked ladies, but I've yet to see any evidence to support the notion that the direction of rotation has anything to do with whether a person is left-brain or right-brain dominant, whatever that would mean.

And to be fair, shouldn't we have a comparable picture with a naked man?

[Gurn Blanston]

There are no spirals, only concentric circles? This seems like a cop out though.

No, actually they ARE spirals. It is definitely a color thing, I'll put you on that track. It's hard enough to figure, I don't have to lie to you.

[Gurn Blanston]

I don't want to discourage anyone from looking at pictures of spinning naked ladies spinning, but I've yet to see any evidence to support the notion that the direction of rotation has anything to do with whether a person is left-brain or right-brain dominant, whatever that would mean.

And to be fair, shouldn't we have a comparable picture with a naked man?

If you start spinning right now, maybe Sean will show up with his video camera soon...

[Scarpia]

So, what color are these spirals?



Curious if you see what I see...

The trick, I guess, is that orange is clearly perceived when contrasted with green, but orange looks like a lighter shade of pink when contrasted with magenta.  By blocking the screen so you can only see one color at once, you will notice that the light pink from the magenta/pink zone is the same orange as in the orange/green zone.  (A quick glance would lead you to think there are four distinct colors but there are only three, the pink in the magenta pink zone is identical to the orange in the green orange zone.)  Right?

The lesson is that the visual system is not good at evaluating absolute color values.  It is good at detecting contrasts with nearby colors.   So your perception of a color depends more on how it contrasts with nearby colors, than on that the color actually is.

[canninator]

No, actually they ARE spirals. It is definitely a color thing, I'll put you on that track. It's hard enough to figure, I don't have to lie to you.

No, I meant that the spirals are made form concentric circles, so they are there, but they aren't. No matter, it's not right.

[karlhenning]

No pink, Karl?

Of course, you're right, Ray.

[karlhenning]

No, actually they ARE spirals. It is definitely a color thing, I'll put you on that track. It's hard enough to figure, I don't have to lie to you.

Somehow I transposed the compositional roles of the pink and orange.

I don't want to discourage anyone from looking at pictures of spinning naked ladies, but I've yet to see any evidence to support the notion that the direction of rotation has anything to do with whether a person is left-brain or right-brain dominant, whatever that would mean.

And to be fair, shouldn't we have a comparable picture with a naked man?

FWIW, I did not pay any particular attention to the sex of the rotating person.

Which may mean that I've failed this optical test, too ; )

[canninator]

The lesson is that the visual system is not good at evaluating absolute color values.  It is good at detecting contrasts with nearby colors.   So your perception of a color depends more on how it contrasts with nearby colors, than on that the color actually is.

Oh yes, nice, the green and blue are actually the same colour!

[Octo_Russ]

Yes, there are only 3 colours, the light blue and light green spirals are actually the same colour, but because the green has orange lines across it, and the blue has magenta lines across it, the brain computes to see the green and blue as two different colours, in fact they're an identical shade of green/blue.

[Brahmsian]

If you start spinning right now, maybe Sean will show up with his video camera soon...

I'm getting a headache from looking at the spiral picture too long.   

Please tell me what to do next, Master Gurn.  I am your servant.

[karlhenning]

Please tell me what to do next, Master Gurn.  I am your servant.

Gurn, on which thread do you wish me to post this 3,000-word article on Zelenka? . . .

[Brahmsian]

Please tell me what to do next, Master Gurn.  I am your servant.

Master, I have destroyed all my non-HIP classical era CDs.  I am ready for my next lesson.

[Josquin des Prez]

And to be fair, shouldn't we have a comparable picture with a naked man?

Why? There are no women in this forum. 

[Scarpia]

Yes, there are only 3 colours, the light blue and light green spirals are actually the same colour, but because the green has orange lines across it, and the blue has magenta lines across it, the brain computes to see the green and blue as two different colours, in fact they're an identical shade of green/blue.

The first thing I noticed is that the orange against green is the same as the pink against magenta.  But it you are right that the cyan against magenta is the same as the green against orange.   That is even less obvious.  The attached shows the three colors present is isolated bars.

[Octo_Russ]

How many shades of green are there?, look far away from the screen, seems to be two, but look close, you can see that there's only one, similar things are happening with the spirals.

[Octo_Russ]

Get close to the screen, constantly look at the middle of the black cross, what happens to all the pink dots?

[Gurn Blanston]

The trick, I guess, is that orange is clearly perceived when contrasted with green, but orange looks like a lighter shade of pink when contrasted with magenta.  By blocking the screen so you can only see one color at once, you will notice that the light pink from the magenta/pink zone is the same orange as in the orange/green zone.  (A quick glance would lead you to think there are four distinct colors but there are only three, the pink in the magenta pink zone is identical to the orange in the green orange zone.)  Right?

The lesson is that the visual system is not good at evaluating absolute color values.  It is good at detecting contrasts with nearby colors.   So your perception of a color depends more on how it contrasts with nearby colors, than on that the color actually is.

You are on the right track, but not quite there, exactly.

[Gurn Blanston]

Oh yes, nice, the green and blue are actually the same colour!

BINGO! There is no green or blue, it is a shade of dark aqua and both are the same color. When the magenta passes through, it looks blue. When the orange passes through, it looks green. That is cool! 

[Gurn Blanston]

I'm getting a headache from looking at the spiral picture too long.   

Please tell me what to do next, Master Gurn.  I am your servant.

  Yes, it will burn you out after a bit, won't it?