Do you believe what you see?!

These are more of the optical illusions which I found on the Net recently, check it out!!
WARNING : May cause permanent eye damage!!

* stare at the round part for a few seconds..
you will notice that the pattern inside is vibrating..

* stare at the middle of the picture..
you will notice that there will lights flashing around the lines..

* by just looking at it, you will notice that the whole picture is vibrating..

* look at the dot in the middle, move your head front and back from the screen,
you will notice that the arrows around it will rotate..

* do you notice that it is rotating??