How many dots at the intersections are black?

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In this scintillating grid illusion, dark dots seem to appear and disappear randomly. Various theories have been proposed to explain it. It may be caused by the mechanism of lateral inhibition (the capacity of an excited neuron to reduce the activity of its neighbors).
Steve Lamberty
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Very interesting!
reach: rather globalillusionsoptical illusionstechnology

Answers by country

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answers
flagSwitzerland
0%
7%
4%
88%
42
flagRepublic of Ireland
7%
0%
3%
88%
26
flagPoland
1%
3%
7%
85%
19741
flagAustralia
3%
2%
8%
85%
81
flagGreece
0%
0%
7%
85%
27
flagGermany
2%
3%
6%
84%
417
flagSingapore
0%
0%
12%
83%
31
flagthe United States
2%
4%
9%
79%
898
flagCanada
4%
4%
5%
79%
74
flagthe United Kingdom
1%
2%
10%
78%
277
flagAustria
3%
7%
7%
77%
77
flagKazakhstan
3%
5%
5%
74%
51
flagMalaysia
0%
13%
9%
72%
22
flagUkraine
3%
5%
12%
71%
315
flagBelarus
6%
10%
4%
69%
65
flagthe Philippines
5%
5%
2%
67%
40
flagIndia
5%
7%
14%
66%
351
flagRussia
4%
5%
12%
66%
333
flagthe Netherlands
6%
3%
16%
64%
31
flagthe United Arab Emirates
0%
3%
18%
55%
27