Dr. Martin says that her advice is to get an EEG — a test that examines brain activity. The movements shown in the video could, she explains, be signs of something relatively innocuous, like ...

Baby with EEG (IMAGE) University of Washington. Caption. This is one of the babies in the experiment wearing an EEG cap that measures brain activity. Credit. University of Texas at San Antonio.

To prepare for the EEG, a doctor places metal discs on the baby’s head that detect and record their brain’s electrical impulses. A baby may need several EEGs, so a doctor can see what their ...