Update: Mumbling CBS Reporter Explains What Happened -- Severe Migraine

The local Los Angeles CBS reporter who became the talk of the nation after her live Grammy report degenerated into gibberish has finally broken her silence and explained what happened -- the incident was the cause of a severe migraine.

(Watch the original video.)

In an interview with her station, CBS 2, Serene Branson opened up about what exactly happened on Sunday night and what led to her incoherent mumbling on live TV. It was an incident many thought signaled a stroke.

"At around 10 o'clock that night I was sitting in the live truck with my field producer and the photographer and I was starting to look at some of my notes," she explained. "I started to think, the words on the page are blurry and I could notice that my thoughts were not forming the way they normally do."

"As soon as I opened my mouth I knew something was wrong," she said. "I was having trouble . remembering the word for Grammy," she said. "I knew what I wanted to say but I didn't have the words to say it."

According to Branson's doctor, who was interviewed for the station's story, Branson's episode was the result of a severe, complex migraine.