forcing my brain to shutdown, is it good point for ld or obe ? and how ?

i dont know if this should be in beyond dreaming but here is my question:
There is something like MNEMOTECHNICS. its technics to use own memory and brain to remember more things. and one element of such techniques is cicero method. basically it is creating set of images which are support images for other images you want to remember.
and i have 400 such images. they are connected in specific order. so if i will view all them as fast as i can in my mind, from 1 to 400 my brain becomes little tired, after 2 time it is more tired, and mostly if i am lie on bed, and do it 3 times, i wake up, i even didnt know that i have fallen asleep.
and it not has to be night, it can be middle of the day...
so somewhere in the middle of 3rd time of running this images, my brain shutdown everything. this is like viewing without talking 3*400= 1200 prepared earlier images, at speed ~2 images per second, and my head really hurt while doing it.

Can i use this point for starting with obe or ld wild ? and how ?

O . O Can you provide a link or go more in depth of how these images work and why? Then I might see why this could be useful to lucid dreaming.
Although since most dreams are just a mush mash of memories I guess it wouldn't hurt to practice your memory.

wikipedia.org/wiki/Method_of_loci

but i take as in pmemory.com

instead of places, i took phyisical objects...

my question is in simple words - can some task which loads brain to full, that he has to shutdown itself, can such task be starting point for obe or ld ?
when brain shutdowns itself it naturally put me down to sleep... so if it can be, how ?

Well I can't find where it states that it causes your brain to "shut down". You are just tiring yourself to sleep. However the method is used for increases memory by linking whatever you want to remember to some object in your mind involving spatial awareness I.E 1 = cat 2= obama 3= car, so 132 would be remember as a room with a cat driving a car over obama. I can't see how you could use this exactly.

one of example can be just switch from 1 to 100 where 1 is cat 2=image of obama 3 - image of car, and so on to 100.
so in your mind you would have to switch from 1 to 100 but only images, so it would be as fast as you can visualize cat, as fast as you can obama, car, and so on. so 100 images would take some time, and later again and again, more images - less boring. i just did it, for my images, and i noticed that if i am sitting in comfortable sofa with eyes closed and relaxed, after 2nd time of 400 images i stopped to feel my hands, i could not locate them where they are exactly....