Serene Branson Serene Branson

Los Angeles reporter Serene Branson's garbled speech on air Sunday night was caused by a "complex migraine," her doctor told the Los Angeles Times

According to Dr. Neil Martin, chief of neurosurgery at the Ronald Reagan UCLA Medical Center, a complex migraine can mimic the symptoms of a stroke, including headache, weakness, loss of vision and difficulty speaking. Martin spoke to the Times with Branson's permission.

Reporter's on-air slurring causes stroke scare

After Branson began speaking nonsensically during a live post-Grammys report, the network cut away and had paramedics check her out. At the time, Brandon recovered quickly and was taken home.