question regarding vibrations

[gil-galad]

As far as I know, the vibrations happen in trance. They indicate that the astral body is loosening. As I know, these vibrations occur naturally when I reach a deep-enough trance. However, recently I have read that you have to do an action (place your awareness outside of your physical body) to triger these vibrations.

Are these vibrations occur naturally when I reach a deep-enough trance? Or do I have to do some action, while in trance, to trigger the vibrations?

As I know, a correct AP attempt goes as follows:
I should relax my body then go into  trance by using some form meditation (breath awareness or mantra), and remain in this state and deepen it until I begin to feel the exit sensations (feeling of heavyness, paralisis, floating sensations, vibrations).   I do not have to do any specific action to triger the vibrations.   

When the exit sensations start, I should try to remain calm and continue the meditation. As soon as I think that these exit sensations are strong enough I should try an exit technique (I imagine myself getting lighter and lighter and floating upwards/ I imagine myself bouncing forwards and backwars more and more, then, when this "bouncing feeling" is strong eough, I "jump" out of my body) 

Can anyone tell me wheter this is a correct method of  astral projection?

Is it true that some people do not feel the vibrations but have other exit sensations(feeling of heavyness, paralisis, floating sensations)?   

[CFTraveler]

As far as I know, the vibrations happen in trance. They indicate that the astral body is loosening. As I know, these vibrations occur naturally when I reach a deep-enough trance. However, recently I have read that you have to do an action (place your awareness outside of your physical body) to triger these vibrations.

No, you have to do an action to move your conscious awareness out of your body completely.  Like you said before, you get to trance, your energy body starts to change 'phases', and then you can either get ejected or not, the exit technique will externalize your consciousness.
The confusion lies because sometimes the act of doing a certain type of exit technique or energy body loosening method can bring you to the vibratory state- however, it's not that it's causing the vibes, it's simply bringing you to trance quicker.

When the exit sensations start, I should try to remain calm and continue the meditation. As soon as I think that these exit sensations are strong enough I should try an exit technique (I imagine myself getting lighter and lighter and floating upwards/ I imagine myself bouncing forwards and backwars more and more, then, when this "bouncing feeling" is strong eough, I "jump" out of my body) 

Can anyone tell me wheter this is a correct method of  astral projection?

So far so good- the bouncing method is not really an exit technique, it's a loosening technique, but depending on how easy your trance is, it can cause an exit.

Is it true that some people do not feel the vibrations but have other exit sensations(feeling of heavyness, paralisis, floating sensations)? 

Correct.  In fact, the more you project, the less dramatic exit sensations become until they're almost imperceptible.  I for example, do no longer get vibes (used to, for a few years).  Some people never feel the vibes.

[gil-galad]

Thanks.

I have 1 more questions left:

I have read( in R Bruce's book) that it is necessary to use a "mental falling tecnique"( imagining going down in a lift,...) to get into the trance state. However, in my opinion, normal mediatation (breath awareness, mantra,...) ,without the "mental falling", also causes the trance. I am using mantra meditation (this is the only one which works for me) and I find it very dificult to integrate any "mental falling exercise" into mantra meditation.

In my opinion, mental falling only facilitates the process, but it is not necessary. I am saying this because there are many other trance meditation exercises out there which do not involve any "mental falling".

Can someone tell wheter it is absolutely necessary to use "mental falling" to get into trance or not?

[CFTraveler]

Thanks.

I have 1 more questions left:

I have read( in R Bruce's book) that it is necessary to use a "mental falling tecnique"( imagining going down in a lift,...) to get into the trance state. However, in my opinion, normal mediatation (breath awareness, mantra,...) ,without the "mental falling", also causes the trance. I am using mantra meditation (this is the only one which works for me) and I find it very dificult to integrate any "mental falling exercise" into mantra meditation.

In my opinion, mental falling only facilitates the process, but it is not necessary. I am saying this because there are many other trance meditation exercises out there which do not involve any "mental falling".

Can someone tell wheter it is absolutely necessary to use "mental falling" to get into trance or not?

Mental falling is a way to get to trance.
I'm pretty sure he doesn't tell you you 'have' to do it 'that way', he is just giving you a way to do it.
If you're talking about Astral Dynamics, MAP or the online treatise, mental falling is one of the techniques he gives you to go into trance.  He also uses 'smoke rings' 'floating balloons', and numerous other visualizations to facilitate trance.
Normal meditation is one way to get to trance, mantras are useful, and there are myriad other ways to do it- anything that relaxes you and yet keeps you 'just occupied enough' to not go into verbal chatter is good- breathing modalities are other ways too.

[podizzle]

Sounds to me like you are on the right track. Post back about your next attempt it sounds like you are right where i am at. (heavy vibrations, being able to move the vibrations to different parts of the body, feelings of exit) Just need to get out!