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.