Pratibha:
I don't know what books you are getting that idea from. I've covered most of the most authoritative writers in Accelerated Learning and none of them give the conscious mind a "bad rap."
Anna Wise in her book points out that the brain wave pattern you want is the one you need at the moment. In fact there are often a combination of brain waves present most of the time.
What i have gleened from the books i've read is that Accelerated Learning is just that because of whole brain thinking and studying. Whole brain includes all 3 dimensions: laterality, focus, centering. This just means that it includes the left/right; top/bottom; front/back parts of the brain.