For questions relating to optical illusions, how our perceptual and cognitive mechanisms give rise to them, the neurological basis of perceiving optical illusions and general queries relating to optical illusion research.

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3
votes
1answer
40 views

How much our visual limitations are instrument(eye)-based, and how much are they brain-based?

Are the limitations to our vision like the field of view and singular focus entirely based on the limitations of the eye? It seems like it's possible to feed an artificial signal into the brain ...
10
votes
1answer
139 views

What happens in your brain when you see a dinosaur in this stenographic image?

You might have come across stereographic Images like the one shown below (found here): What happens in your brain when you observe the dinosaur? (as you put your face on the image by touching your ...
7
votes
1answer
137 views

How come we see a line when there isn't one in this picture?

I got this picture I generated myself and I don't understand how come we can see two diagonal lines when, I think, there is no actual lines. Zooming in: Center: Just another 2px wide square… ...
3
votes
0answers
100 views

Optical illusions : human universal vs environmental influences [closed]

It's well known today that the susceptibility to optical illusions are influenced by the environment: multiple studies with the Müller-Lyer illusion conducted in Zambia proved this environmental ...
25
votes
2answers
2k views

What color is this dress? — And why do some see it as white and gold and others see it as black and blue?

Here's the dress (and keep reading, this is actually a serious question): This question about this image has apparently become quite a rapidly spreading meme on the internet. And after conducting ...
7
votes
2answers
79 views

aftereffects of auditory adaptation

Adaptation is a very robust feature of sensory processing: when a stimulus is displayed for a prolonged period, or repeatedly, the neural response to it will diminish. This process creates a local ...
9
votes
2answers
747 views

What's the explanation of this optical illusion where many coloured arcs radiate from a central point?

I saw the image below on facebook. At first, I thought it's a GIF animation since it doesn't appear static but it turned out to be a static JPEG image and the apparent motion is caused by the brain. ...
5
votes
1answer
167 views

Distortion of faces presented serially in peripheral vision

I've kind of already answered this question for myself, but I can't resist sharing it anyway. Please feel welcome to add anything you can in another answer. Stare at the cross in the middle and try ...
2
votes
3answers
148 views

Is this some sort of soft-coded Grapheme-Color synethesia?

I just found this remarkable optical illusion: To do: Fixate your gaze on the center of one of the figures and stare at it for some time (20-30 seconds) while it cycles (without moving your eyes). ...
7
votes
1answer
214 views

Can prolonged neural adaptation lead to HPPD?

The human brain adapts to a constant stimulus of our neural system. For instance, if we ride a train and look out of the window for a long time and the train stops, we have the feeling of slowly ...