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).
Steve Lamberty
0
Correct this question
8
Very interesting!
reach: rather globalillusionsoptical illusionstechnology

Answers by country

10%
25%
50%
None
answers
flagAustria
2%
2%
0%
92%
42
flagSwitzerland
0%
4%
8%
87%
24
flagAustralia
3%
1%
7%
86%
76
flagPoland
1%
3%
7%
85%
18737
flagGreece
0%
0%
7%
84%
26
flagRepublic of Ireland
10%
0%
5%
84%
19
flagSingapore
0%
0%
13%
83%
30
flagGermany
3%
4%
8%
80%
263
flagCanada
3%
4%
4%
80%
65
flagthe United States
2%
4%
9%
78%
823
flagthe United Kingdom
1%
2%
11%
76%
234
flagBelarus
7%
9%
2%
75%
41
flagUkraine
4%
4%
10%
74%
239
flagthe Netherlands
5%
5%
15%
70%
20
flagMalaysia
0%
15%
10%
70%
20
flagKazakhstan
3%
3%
10%
68%
29
flagRussia
4%
7%
13%
67%
185
flagIndia
5%
7%
14%
66%
315
flagthe Philippines
2%
5%
2%
66%
36
flagthe United Arab Emirates
0%
0%
21%
60%
23