Hi blueskyfvr, I havent ever heard of this but that doesnt mean it couldnt be something. Here is a link from the American Heart Association which you can read if you wish. It is a really good site.
http://www.americanheart.org/presenter.jhtml?identifier=3053
I would keep track of these attacks or spells and do let your doctor know next time you see them or should they become more frequent or bothersome make an appointment.
Take care