Hello Buddy... My name is Chuck, and I am one of the Global Moderators here on the Anxiety Zone site.
What you are describing as "brain zaps" is a common symptom of an anxiety/panic disorder, and not related at all to "Exploding Head Syndrome" (EHS).
A rare and relatively undocumented parasomnia event, EHS is a form of hypnagogic auditory hallucination in which one experiences a loud bang in their head. This might sound like a gun being fired, a bomb going off, the crashing of cymbals, or any other form of loud, indecipherable noise that seems to originate from inside the head.
So EHS is an actual noise, and not a brain zap, which feels like an electrical current going through your brain.
I hope this helps to answer your question.
The very best to you, Buddy!... Chuck