*Edit: I checked some of the stuff more out in detail. While some concepts on this are valid and backed up by sience, others like RSD are not. Use this as a springboard for learning, not as a valid source in itself. Yes it says so in the corner already. But spelling it out might help.
People are more complicated then a diagram from the internet. Never forget that.
Literal emergencies will fall into that category as well, but it is broader than just the stuff ER-people do for a living.
These are things like:
Basically, if you get into a mental state of immediate urgency, your executive function runs on adrenaline alone. And suddenly you're better than ever before at just. getting. stuff. done. - but not for very long.