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
flagAustria
2%
2%
0%
92%
38
flagFrance
0%
5%
0%
88%
17
flagSwitzerland
0%
4%
8%
87%
24
flagAustralia
4%
1%
8%
86%
74
flagPoland
1%
3%
7%
85%
18587
flagGreece
0%
0%
7%
84%
26
flagRepublic of Ireland
10%
0%
5%
84%
19
flagSingapore
0%
0%
13%
82%
29
flagGermany
2%
4%
8%
81%
234
flagCanada
3%
4%
4%
81%
64
flagthe United States
2%
4%
9%
78%
816
flagBelarus
7%
7%
2%
77%
40
flagthe United Kingdom
1%
3%
11%
76%
231
flagUkraine
4%
4%
10%
74%
232
flagthe Netherlands
5%
5%
15%
70%
20
flagMalaysia
0%
15%
10%
68%
19
flagIndia
5%
7%
14%
66%
299
flagRussia
4%
8%
12%
66%
167
flagKazakhstan
4%
4%
12%
66%
24
flagthe Philippines
2%
5%
2%
65%
35