captains log, stardate 14022010.350
trancing note
1) meditation induced
using my usual meditation technique i have managed to achieve specific trance which I clarify as "empty mind" trance. In such trance it is easy to focus on one thing you want and cast out everything else. Prolonged use of trances may make you easier to fall into different trances
2) music induced
I have achieved this type of trance by listening to music I find psychedelic (every music effects different people in different ways). Way to recognize this state is that your mind feels like it operates differently, your muscles feel relaxed and you might feel slight tingling in your body (something like when I focus rage or energy with my mind). I believe these trances are very common, but unnoticed because they vary in "depth". While playing guitar hero with keyboard after few weeks without playing it, I have noticed that my hands work "by themselves" with little of mental control or willpower. While comparing this to my playing ability day after I have noticed that I played much worse without a trance.
This brings me to conclusion that trances "draw out" subconscious part of mind and suppress conscious. I have played guitar hero a lot and everything got "recorded" into my subconsciousness and trance only drew that out.
3) side effects, related to 1)
prolonged trancing may cause short term memory losses, slower reaction time, more often and more intense flashbacks (memories of past events triggered by smell, touch...), more often spacing out (getting lost in thoughts), dizziness (can be cured by sending psi in your head with intention of clearing out the dizziness, sometimes it works instantly sometimes in few tries, it's not extreme dizziness) and maybe something more. Most side effects disappear when you return to your "normal" mental operation, but flashback and spacing out might be permanent (I'm not sure about it being permanent it may be caused because i often manipulate my mind to manipulate emotions).
4) possible "triggers", related to 2)
I have noticed that electric guitar tunes of specific frequency, vocal repetition and instrumental repetition (such as mighty guitar riffs

) cause my mental state change.
In order to induce trance faster and stronger you need to wish it and listen to what cause you to get into one, then let go of your usual thinking and worries, give in to rhythm and enjoy the sensation you might feel. With very little effort you will notice "symptoms" described above.
I don't know how trancing effects emotional system because I have suppressed my emotions long ago

5) length of a trance
trances can last as long as you keep "using them". Once the trance is induced you can prolong it by concentration and/or specific breathing technique.
6) my opinion on trancing
Trancing is quite fun if you ask me. It brings you to different mental states you wouldn't know about. You feel more relaxed and focused (depending on type of trance). I don't know how it feels to be on drugs but I imagine it feels similar to this (why use drugs when you can feel the same way without bad consequences). I don't mind any of these side effects I mentioned, not even if those 2 may be permanent, it all adds to the appeal of trancing.
EDIT: Added a bit more info