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Transcranial Electrical Currents to Probe EEG Brain Rhythms and Memory Consolidation during Sleep in Humans
Open accessAbstract
Previously the application of a weak electric anodal current oscillating with a frequency of the sleep slow oscillation (∼0.75 Hz) during non-rapid eye movement sleep (NonREM) sleep boosted endogenous slow oscillation activity and enhanced sleep-associated memory consolidation. The slow oscillations occurring during NonREM sleep and theta oscillations present during REM sleep have been considered of critical relevance for memory formation. Here transcranial direct current stimulation (tDCS) oscillating at 5 Hz, i.e., within the theta frequency range (theta-tDCS) is applied during NonREM and REM sleep. Theta-tDCS during NonREM sleep produced a global decrease in slow oscillatory activity conjoint with a local reduction of frontal slow EEG spindle power (8-12 Hz) and a decrement in consolidation of declarative memory, underlining the relevance of these cortical oscillations for sleep-dependent memory consolidation. In contrast, during REM sleep theta-tDCS appears to increase global gamma (25-45 Hz) activity, indicating a clear brain state-dependency of theta-tDCS. More generally, results demonstrate the suitability of oscillating-tDCS as a tool to analyze functions of endogenous EEG rhythms and underlying endogenous electric fields as well as the interactions between EEG rhythms of different frequencies.
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“Marshall et al. (2011) found that theta transcranial direct current stimulation (theta-tDCS) applied during REM sleep increases fast beta/gamma EEG oscillations”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Marshall et al., 2011
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“The theta-tDCS condition was associated with worse mood (i.e., as measured by Positive and Negative Affect Scale negative scores) on the morning after awakening from sleep, compared to sham”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Marshall et al., 2011
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“the widespread increase in gamma activity with theta-tDCS provided evidence for the functional coupling between these two rhythms”
From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Marshall et al., 2011
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“tDCS at the 5 Hz theta frequency during early non-REM sleep had an immediate suppressing rather than enhancing effect on endogenous slow oscillation and frontal slow spindle activity, and impaired overnight retention of word pairs (784).”
From About Sleep's Role in Memory (2013) · cites this paper as [784]
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“C:in contrast, tDCS oscillating at 5 Hz (theta-tDCS) decreased slow oscillation activity at all recording sites and slow frontal spindle activity, and these effects were associated with an impaired retention of declarative memory across sleep.”
From About Sleep's Role in Memory (2013) · cites this paper as [784]
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“In addition, there is evidence that toDCS only at 0.75 Hz (not at 5 Hz) and applied only during sleep leads to an increase of memory consolidation [32,52,53].”
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“Further controls ensured that the effects depended on the frequency of the oscillating stimulation and on the brain state (FIGURE 5C): tDCS at the 5 Hz theta frequency during early non-REM sleep had an immediate suppressing rather than enhancing effect on endogenous slow oscillation and frontal slow spindle activity,…”
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Metadata
- Authors
- Marshall, L., Kirov, R., Brade, J., Mölle, M., & Born, J.
- Affiliations
- University of Lübeck (DE)
- Bulgarian Academy of Sciences (BG)
- Corresponding author
- Marshall, Lisa
- Venue
- PLoS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2011-02-14
- Volume
- 6
- Issue
- 2
- Pages
- e16905
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC3038929
- OpenAlex
- W1966385969
- Cited by
- 188
- References
- 63
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 4 · 2023: 7 · 2022: 8 · 2021: 13 · 2020: 14 · 2019: 12 · 2018: 11 · 2017: 16 · 2016: 22 · 2015: 18 · 2014: 16 · 2013: 18 · 2012: 12
- FWCI
- 9.37
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- PLoS ONE (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Deutsche Forschungsgemeinschaft (SFB654)
- Universität zu Lübeck
- Topics
- Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Keywords
- transcranial direct current stimulation, sleep slow oscillations, REM sleep, NREM sleep, memory consolidation, declarative memory, theta oscillations, gamma oscillations, EEG spindles, endogenous electric fields, sleep-dependent memory
- MeSH terms
- Adolescent, Adult, Biological Clocks, Brain, Electric Stimulation, Electroencephalography, Female, Humans, Male, Memory, Neuropsychological Tests, Sleep, Task Performance and Analysis, Deep Brain Stimulation, Young Adult
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