Stephen LaBerge is an American psychophysiologist and a leading figure in the scientific study of lucid dreaming. He is best known for developing techniques to induce and maintain lucidity during REM sleep and for founding The Lucidity Institute. His research has provided empirical evidence for the reality of lucid dreams and has explored their potential therapeutic applications. LaBerge's work has significantly advanced the understanding of consciousness and has made lucid dreaming accessible to a wider audience through his books and workshops.