Check this out

[olds]

Text

 

[AvesPKS]

Pretty freaky...

 

[Pokey007]

Obey the HipnoToad!

 

[DWW]

R

 

[johnjbruin]

i have seen this before somplace. i think its really cool
anyone know the scientific reason for this? like an actual explanation why we imagine it moving?

 

[olds]

Originally posted by: DWW
R

Link?

 

[ajpa123]

Thanks so much for that link !

Go to the home page from the link and read the first paragraph.
I read pretty fast and read it almost as fast as i usually do.. I read the first few words without realizing the errors lol

Thanks for the knowledge !

AJ.

 

[Actaeon]

Crappy thread title....

Seen it before (somewhere else), but cool link for those who havn't seen it.

 

[olds]

Originally posted by: ajpa123
Thanks so much for that link !

Go to the home page from the link and read the first paragraph.
I read pretty fast and read it almost as fast as i usually do.. I read the first few words without realizing the errors lol

Thanks for the knowledge !

AJ.

Really?

 

[PowerMacG5]

Originally posted by: DWW
R

E

I have definitely seen this before on ATOT, and am too lazy to find proof.

 

[brigden]

God, I love the Internet. Full of pointless shite like this to entertain me for hours.

 

[ajpa123]

Originally posted by: oldsmoboat

Originally posted by: ajpa123
Thanks so much for that link !

Go to the home page from the link and read the first paragraph.
I read pretty fast and read it almost as fast as i usually do.. I read the first few words without realizing the errors lol

Thanks for the knowledge !

AJ.

Really?

Yes really.. lol..

about 10 seconds.

AJ.

 

[olds]

Originally posted by: Actaeon
Crappy thread title....

Seen it before (somewhere else), but cool link for those who havn't seen it.

Thanks, Jonathan. Next time I'll consult you first. BTW, your spelling sucks.

 

[Captain4]

Discover magazine covered this behavior recently (they used a different image, but the same concept). Here's their explanation of it:

Your brain is a taskmaster that often makes individual neurons perform multiple operations at the same time. Like any other overworked laborers forced to juggle too many responsibilities, overwrought nerve cells are prone to make mistakes.

The rotation you perceive is called the Pinna-Brelstaff illusion. Vision researchers Baingio Pinna and Gavin Brelstaff theorize that illusory rotation arises from the brain's strategy of making certain neurons responsible for detecting both the orientation and the direction of movement of visual lines and curves.

Neurons in the visual cortex of the brain are organized into subgroups, each of which responds best to lines oriented at a specific angle. Neurons that "prefer" the particular angle of an object viewed at any given moment are more active than those preferring other orientations. A subgroup of visual neurons gets most excited when a line with a preferred orientation is in motion and the direction of that motion is at a right angle to the line's orientation.

Just as the brain determines the orientation of objects by "looking" at which groups of orientation-selective neurons are active, it also assesses the direction of motion of objects by the activity of those same nerve cells. This doubling up of orientation and motion detection works great if a line is moving at right angles to its orientation, but if the line is moving in any other direction, the brain gets confused.

 

[olds]

Originally posted by: Captain4
Discover magazine covered this behavior recently (they used a different image, but the same concept). Here's their explanation of it:

Your brain is a taskmaster that often makes individual neurons perform multiple operations at the same time. Like any other overworked laborers forced to juggle too many responsibilities, overwrought nerve cells are prone to make mistakes.

The rotation you perceive is called the Pinna-Brelstaff illusion. Vision researchers Baingio Pinna and Gavin Brelstaff theorize that illusory rotation arises from the brain's strategy of making certain neurons responsible for detecting both the orientation and the direction of movement of visual lines and curves.

Neurons in the visual cortex of the brain are organized into subgroups, each of which responds best to lines oriented at a specific angle. Neurons that "prefer" the particular angle of an object viewed at any given moment are more active than those preferring other orientations. A subgroup of visual neurons gets most excited when a line with a preferred orientation is in motion and the direction of that motion is at a right angle to the line's orientation.

Just as the brain determines the orientation of objects by "looking" at which groups of orientation-selective neurons are active, it also assesses the direction of motion of objects by the activity of those same nerve cells. This doubling up of orientation and motion detection works great if a line is moving at right angles to its orientation, but if the line is moving in any other direction, the brain gets confused.

That's what I was thinking!

 

[PowerMacG5]

Originally posted by: oldsmoboat

Originally posted by: Captain4
Discover magazine covered this behavior recently (they used a different image, but the same concept). Here's their explanation of it:

Your brain is a taskmaster that often makes individual neurons perform multiple operations at the same time. Like any other overworked laborers forced to juggle too many responsibilities, overwrought nerve cells are prone to make mistakes.

The rotation you perceive is called the Pinna-Brelstaff illusion. Vision researchers Baingio Pinna and Gavin Brelstaff theorize that illusory rotation arises from the brain's strategy of making certain neurons responsible for detecting both the orientation and the direction of movement of visual lines and curves.

Neurons in the visual cortex of the brain are organized into subgroups, each of which responds best to lines oriented at a specific angle. Neurons that "prefer" the particular angle of an object viewed at any given moment are more active than those preferring other orientations. A subgroup of visual neurons gets most excited when a line with a preferred orientation is in motion and the direction of that motion is at a right angle to the line's orientation.

Just as the brain determines the orientation of objects by "looking" at which groups of orientation-selective neurons are active, it also assesses the direction of motion of objects by the activity of those same nerve cells. This doubling up of orientation and motion detection works great if a line is moving at right angles to its orientation, but if the line is moving in any other direction, the brain gets confused.

That's what I was thinking!

Me too. We must have been seperated at birth.

 

[Bekker]

I did not see any movement, so I guess that proves I am braindead.

B