How effective is it to use a masked subliminal overnight while sleeping rather than in the daytime?
Once the listener of a subliminal recording falls asleep, we technically move out the traditional “subliminal” area and enter the area of “sleep learning”. Most of the research we have available comes from the Russian studies, in which up to 10,000 volunteers were participating in sleep-learning and sleep suggestion research simultaneously. The predominant result of this study was that sleeping subjects are not very effective learners. But, attitude modification, the kind of thing we are most often trying to accomplish with subliminal recordings, was somewhat effective with a relatively small number of subjects. There are two significant psychological roadblocks to effective results, when a sleeping subject is involved. First, is the “arousal barrier”. Nearly 90% of all subjects are awakened by the sound of the recording itself. A fairly large number of people never get over this, and eventually stop trying to use the recordings when the annoyance of being awakened every night finally
