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
flagGreece
0%
0%
6%
87%
31
flagSwitzerland
0%
6%
6%
86%
44
flagPoland
1%
3%
7%
85%
19860
flagGermany
2%
3%
6%
85%
440
flagAustralia
3%
2%
8%
85%
81
flagRepublic of Ireland
7%
0%
7%
85%
27
flagSingapore
0%
0%
12%
83%
31
flagthe United States
2%
4%
9%
79%
925
flagCanada
4%
4%
5%
79%
74
flagthe United Kingdom
1%
2%
10%
78%
288
flagAustria
3%
7%
7%
78%
79
flagKazakhstan
3%
5%
5%
75%
54
flagMalaysia
0%
13%
9%
72%
22
flagUkraine
3%
5%
12%
71%
316
flagBelarus
7%
10%
4%
68%
67
flagthe Philippines
5%
5%
2%
67%
40
flagIndia
5%
7%
14%
66%
355
flagRussia
4%
5%
12%
64%
346
flagthe Netherlands
6%
3%
18%
62%
32
flagthe United Arab Emirates
0%
3%
18%
55%
27