Noble_Nogitsune
There are many things that can be used to trigger such a state. I believe there is a term floating around called "anchoring", which is using various things to trigger a reaction in the brain to cause something. It may be a psionics term, if I'm not mistaken, but I believe it can be used to apply to this, as it's the effect it's after, not so much how it can be used.
Anchoring originates in Neural Linguistic Programming. It was the idea that we could, essentially, condition ourselves. It's somewhat accurate - as conditioning in humans can be strong - but humans are more capable than other animals in reconditioning themselves. NLP was big in the 70s and early 80s.