"There are abundant analogies for it in our daily experience.

From the accounts of patients I infer that it is not different from one's sensations in falling asleep while thinking of something.

You know that we find ourselves forgetting preceding links in the train of thought, and in turning back to recall what went before, what came after is meanwhile forgotten, the clue is lost, and we yield to a pleasing bewilderment which is presently itself forgotten in sleep.

The next morning we may or may not recall the matter.

The only difference is that after the deep sleep which always follows the application of my process we never recall it, that is, if the operation has been successful.