How many dots at the intersections are black?

10%
25%
50%
None
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).
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Steve Lamberty
reach: rather globalillusionsoptical illusionstechnology
10%
25%
50%
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answers
flagthe United Arab Emirates
0%
0%
0%
100%
25
flagUnknown
1%
2%
4%
91%
1118
flagNorway
0%
0%
5%
91%
36
flagDenmark
0%
8%
0%
91%
24
flagSpain
0%
4%
4%
91%
23
flagGermany
0%
0%
8%
88%
212
flagAustralia
2%
2%
8%
88%
50
flagPoland
1%
2%
7%
86%
17605
flagSweden
0%
0%
13%
86%
23
flagthe United Kingdom
1%
2%
7%
85%
446
flagCanada
3%
1%
10%
83%
60
flagFrance
2%
6%
6%
82%
45
flagItaly
0%
3%
13%
82%
29
flagthe United States
1%
4%
7%
81%
908
flagRepublic of Ireland
5%
1%
11%
80%
51
flagRussia
3%
3%
7%
75%
54
flagIndia
2%
3%
12%
74%
227
flagthe Netherlands
4%
4%
14%
71%
63
flagUkraine
6%
6%
6%
71%
46
flagthe Philippines
0%
3%
7%
62%
27