Our emotional parts emotions when triggered (spontaneously?) are overbearing and overwhelming difficult to handle because they will trigger the one having them out and it's a battle then to stay present and focused.

For example...when touched, Barbara gets lusty and starts to dominate the mind in thought and feel...so I got to speak up in my head and tell them no...not now not right time...and push them away.

Fear is a hard one because it's so strong that it has embarrassed us a time ir two in a fight.
The Angry One is hard to control when triggered....he erupts like a volcano. We can feel him simmering at the bottom of our gut over some injustice or wrong then explodes to the top of our head and outward....we can just watch in horror. Swallowing hard and talking him down when triggered sometimes works....but a lot of times not. Crying joy over a tender moment just pisses the guys off because they can't stop a tear jerker while we fems just cry over the silliest things. They fight it like it was their last beer.
As far as memories evoking emotions....our biggest mostly reactive emotions are surprised, bewilderment, embarrassed, horror, and shock amazement. Our memories are silent and just flashes of an event with no emotions tied to them. The immediate emotions comes in when we realized that we did the things being flashbacked with the mental words og "OMG, i can't believe we did that!"

The only tool in our aresenal against any intrusive emotion when triggered is distraction. I'll swallow hard and physically tighten my muscles up, pushing, getting a grip, look away and focus on another topic, thought, idea, what I see describing it....all intently until I've settled and the emotion has passed and sometimes take a deep breath breathing again blowing out slowly- which is actually a grounding tool.

I'm not sure if this helps because we are "poly-fragmented"- like we are a 3-d picture puzzle where every piece is it's own part.