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Theta phase-coordinated memory reactivation reoccurs in a slow-oscillatory rhythm during NREM sleep

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Doeller,  Christian F.
Egil and Pauline Braathen and Fred Kavli Centre for Cortical Microcircuits, Kavli Institute, Norwegian University of Science and Technology, Trondheim, Norway;
Department Psychology (Doeller), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Schreiner, T., Doeller, C. F., Jensen, O., Rasch, B., & Staudigl, T. (2018). Theta phase-coordinated memory reactivation reoccurs in a slow-oscillatory rhythm during NREM sleep. Cell Reports, 25(2), 296-301. doi:10.1016/j.celrep.2018.09.037.


Cite as: https://hdl.handle.net/21.11116/0000-0002-55EA-7
Abstract
It has been proposed that sleep's contribution to memory consolidation is to reactivate prior encoded information. To elucidate the neural mechanisms carrying reactivation-related mnemonic information, we investigated whether content-specific memory signatures associated with memory reactivation during wakefulness reoccur during subsequent sleep. We show that theta oscillations orchestrate the reactivation of memories during both wakefulness and sleep. Reactivation patterns during sleep autonomously re-emerged at a rate of ∼1 Hz, indicating a coordination by slow oscillatory activity. Schreiner et al. show that cue-triggered memory reactivation shares the same neural signatures during wakefulness and sleep. Theta oscillations orchestrate the reactivation of memories during both physiological states. During sleep, reactivation patterns autonomously re-emerge at a rate of ∼1 Hz, indicating a coordination by slow oscillations