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
9%
0%
4%
86%
22
flagPoland
1%
3%
7%
85%
19035
flagAustralia
3%
1%
8%
85%
78
flagSwitzerland
0%
7%
7%
85%
28
flagGreece
0%
0%
7%
84%
26
flagSingapore
0%
0%
12%
83%
31
flagGermany
2%
4%
7%
81%
321
flagCanada
2%
4%
4%
81%
69
flagthe United States
2%
4%
9%
78%
842
flagthe United Kingdom
1%
3%
10%
77%
245
flagAustria
4%
7%
7%
77%
63
flagUkraine
4%
5%
11%
73%
256
flagBelarus
6%
10%
4%
72%
47
flagKazakhstan
3%
3%
9%
71%
32
flagMalaysia
0%
15%
10%
70%
20
flagthe Netherlands
4%
4%
17%
69%
23
flagRussia
5%
6%
12%
67%
236
flagthe Philippines
2%
5%
2%
66%
36
flagIndia
5%
7%
14%
65%
327
flagthe United Arab Emirates
0%
4%
20%
60%
25