18.43 It's been a long night and day of Oscar coverage, and we'll be rounding this live blog off soon. But, before we do, I think it's important to point out that someone on Twitter has made a fish-related Oscars joke. (Oscar fish, incidentally, are a type of cichlid.
For other uses, see Fight or Flight. The fight-or-flight response (also called the fight, flight, freeze, or fawn response [in PTSD ], hyperarousal, or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It was first described by Walter Bradford Cannon.
The fight or flight response is a complicated systemic reaction. These are just some of the instantaneous messengers and physiologic changes involved. In fact, the initial perception of a threat or danger is also received by an area in the brain stem that begins yet another axis of communication and response involving the release of the messenger norepinephrine.