"Current" going through external monitor

[farmslicer7]

I have a Samsung 20" monitor hooked up to my laptop. When it is on, there is a "current" thing that goes through the monitor. It looks like a wave of some sorts that goes from the bottom of the monitor, to the top. I have speakers that are on that are next to it, which may be the reason...Is there any other reason why this new monitor would do this?