The virtual gastric band procedure mixes hypnosis with hypnopedia.
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This method is complemented with psychological treatment for anxiety management and with hypnopedia.
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The hypnosis instructs the stomach it is smaller than it really is and hypnopedia reinforces alimentary habits.
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More examples
Sleep-learning: teaching during sleep (as by using recordings to teach a foreign language to someone who is asleep)
Sleep-learning (also known as hypnopu00E6dia, or hypnopedia) is an attempt to convey information to a sleeping person, typically by playing a sound recording to them while they sleep. Research on this has been inconclusive. Some early studies tended to discredit the technique's effectiveness, while others have found that the brain indeed reacts to stimuli and processes them while we are asleep.