Odor cueing of declarative memories during sleep enhances coordinated spindles and slow oscillations

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dc.contributor.authorSanchez-Corzo, Andrea
dc.contributor.authorBaum, David M.
dc.contributor.authorIrani, Martin
dc.contributor.authorHinrichs, Svenja
dc.contributor.authorReisenegger, Renate
dc.contributor.authorWhitaker, Grace A.
dc.contributor.authorBorn, Jan
dc.contributor.authorSitaram, Ranganatha
dc.contributor.authorKlinzing, Jens G.
dc.date.accessioned2025-01-20T17:08:29Z
dc.date.available2025-01-20T17:08:29Z
dc.date.issued2024
dc.description.abstractLong-term memories are formed by repeated reactivation of newly encoded information during sleep. This process can be enhanced by using memory-associated reminder cues like sounds and odors. While auditory cueing has been researched extensively, few electrophysiological studies have exploited the various benefits of olfactory cueing. We used high-density electroencephalography in an odor-cueing paradigm that was designed to isolate the neural responses specific to the cueing of declarative memories. We show widespread cueing-induced increases in the duration and rate of sleep spindles. Higher spindle rates were most prominent over centroparietal areas and largely overlapping with a concurrent increase in the amplitude of slow oscillations (SOs). Interestingly, greater SO amplitudes were linked to a higher likelihood of coupling a spindle and coupled spindles expressed during cueing were more numerous in particular around SO up states. We thus identify temporally and spatially coordinated enhancements of sleep spindles and slow oscillations as a candidate mechanism behind cueing-induced memory processing. Our results further demonstrate the feasibility of studying neural activity patterns linked to such processing using olfactory cueing during sleep.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.neuroimage.2024.120521
dc.identifier.eissn1095-9572
dc.identifier.issn1053-8119
dc.identifier.urihttps://doi.org/10.1016/j.neuroimage.2024.120521
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90954
dc.identifier.wosidWOS:001175181400001
dc.language.isoen
dc.revistaNeuroimage
dc.rightsacceso restringido
dc.subjectSleep
dc.subjectMemory reactivation
dc.subjectOdor cueing
dc.subjectSleep spindle
dc.subjectSlow oscillation
dc.subjectHigh-density EEG
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleOdor cueing of declarative memories during sleep enhances coordinated spindles and slow oscillations
dc.typeartículo
dc.volumen287
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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