Can anyone clarify?

[Summerlander]

I'll have to revise the book.  By the way, I entered the phase yesterday and I strained the brain to intensify vibrations.  It worked and it was the first time I used it.  Maybe it's just me but it seemed easy.

[Jeff]

I've found that 'straining the brain' works great if you use the 'WILD' method.

It's not my preferred entrance but: Sometimes I do WBTB and watch the imagery behind my closed eyes form.After some time it  may start to become very stable,and when the moment is right the brain strain will work. Even if I fail at this and fall asleep,I often become lucid in the following dream or use an indirect technique after the next waking. ( DEILD)

I don't know about the percentage of effectiveness over all;but when the timing is right it is certainly an excellent tool in the arsenal!

Interesting about the vibrations.When I do this I seem to bypass vibrations altogether.I might try this as a deepening method maybe?

[Michael Raduga]

It's a linguistic problem.
I meant it works easily while training (practicing), but not in real practice.

Actually, it's a very good techniques, but people ocasionally strain real muscles while using it. That's the primary problem.

[NOVA]

Thanks, I will avoid using it for now as I seem to be straining muscles as well

The best way to describe "straining the brain" is this.

You know when you yawn, you can hear vibrations?

Ok, that is what "straining the brain" is like.  Yawning without opening your mouth.