The document presents several optical illusions intended to confuse and trick the human brain and eyes. Viewers are instructed to stare at images containing moving dots, parallel lines, spirals, and four dots in the center to induce visual effects like apparent motion or afterimages. The purpose is to demonstrate how optical illusions can manipulate human perception in interesting ways.

1. The human brain … … tricks us whenever it can!

2. How many black dots can you count?

3. Those caterpillars like drawings appears to moving in left and right directions.

4. If something‘ s rotating – you need a break!

5. Picture appears to be expanding...

6. Optical Illusions and Visual Phenomena Want to confuse your eyes and brain a bit? Yes? Then you might want to have a look at the following pics ..

7. Its Moving …..

8. … doesn‘t move!

9. ... parallel or not?

10. Coil or circle?

11. Concentrate on the cross in the middle, after a while you will notice that this moving purple dot will turn green! Look at the cross a bit longer and you‘ll notice that all dots except the green one will disappear.

12. Best things last ... Follow the instruction below. Stare at the 4 little dots on the middle of the picture for 30 seconds 2) then look at a wall near you 3) a bright spot will appear 4) twinkle a few times and you‘ ll see a figure 5) What do you see? Or even WHO do you see?