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Updated: Dec 18, 2025
The Combination of Transcranial Alternating Current Stimulation and Electroencephalogram
Published on: October 10, 2025
Attempted induction of signalled lucid dreaming by transcranial alternating current stimulation
Cloé Blanchette-Carrière1, Sarah-Hélène Julien2, Claudia Picard-Deland3
1Department of Psychiatry, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec H3C 3J7, Canada; Center for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Cœur de Montréal, 5400 Gouin Blvd West, Montréal, Québec H4J 1C5, Canada.
Abstract:
Neurophysiological correlates of self-awareness during sleep ('lucid dreaming') remain unclear despite their importance for clarifying the neural underpinnings of consciousness. Transcranial direct (tDC) and alternating (tAC) current stimulation during sleep have been shown to increase dream self-awareness, but these studies' methodological weaknesses prompted us to undertake additional study. tAC stimulation was associated with signal-verified and self-rated lucid dreams-but so was the sham procedure. Situational factors may be crucial to inducing self-awareness during sleep.
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