Spike-and-wave morphology

This adult is asleep, and the conclusion seems pretty straightforward, doesn't it?

The wave has a "field" and a spike morphology, followed by a typical slow wave that is in the same distribution as the spike.

The above is the same as the top page, but with the high frequency filter changed from 35 Hz to 70 Hz. These two pages illustrate the point that you should not interpret a wave as a spike or a spike-and-wave until you have reviewed the discharge with the high frequency filter set at 70 Hz, at the minimum. There are a few other nuances on the first page that might raise red flags, but that is not the point of this post.