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
flagRepublic of Ireland
7%
0%
3%
88%
26
flagSwitzerland
0%
7%
5%
87%
39
flagAustralia
3%
1%
8%
86%
79
flagPoland
1%
3%
7%
85%
19604
flagGermany
2%
3%
7%
84%
385
flagGreece
0%
0%
7%
84%
26
flagSingapore
0%
0%
12%
83%
31
flagCanada
4%
4%
4%
80%
73
flagthe United States
2%
4%
9%
78%
880
flagthe United Kingdom
1%
2%
10%
78%
276
flagAustria
4%
8%
8%
76%
73
flagKazakhstan
2%
4%
6%
76%
47
flagUkraine
3%
5%
11%
72%
310
flagMalaysia
0%
13%
9%
72%
22
flagBelarus
6%
11%
3%
69%
62
flagthe Philippines
5%
5%
2%
67%
40
flagRussia
4%
5%
12%
66%
322
flagthe Netherlands
6%
3%
13%
66%
30
flagIndia
5%
7%
14%
65%
347
flagthe United Arab Emirates
0%
3%
18%
55%
27