Well there are many types of seizures, some people don't actually convulse, like the ones you see in movies and on tv! I'm no doctor but believe you are fine, we've all had those times where we are almost asleep but fully aware and snap ourselfs (and sometimes our significant others lol) awake. Ringing in ears is a common thing, before I have my seizures it feels like I have a "wooshy" feeLing in my ears, almost like loyd bass from as car. Have you had any aura changes, or any severe/chronic deja vu, these are often in relation to seizures, bit can also just be a common occurrence!