10 Hz Alpha and 40 Hz Alpha Wave Animations

Hi,

I want to make a 10 Hz Alpha (an image or light blinks 10 times per sec.) wave animation (for example a frame around the scene), 40 Hz Alpha (an image or light blinks 40 times per sec.) animation (for example a frame around the scene) in the game.

How can I make the 10 Hz and 40 Hz Alpha wave animations? I try it with animator, but when I play it, animations play brokenly, not regularly blink.

Thanks,