Effects of Brain Stimulation During Daytime Nap on Memory Consolidation in Younger, Healthy Subjects

NCT ID: NCT01840865

Last Updated: 2016-03-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-10-31

Study Completion Date

2015-01-31

Brief Summary

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The beneficial effect of daytime sleep on memory consolidation has been shown in young, healthy subjects. Especially, periods rich in slow-wave sleep (SWS) have shown a memory enhancing effect on hippocampus-dependent declarative memory. Slow oscillatory activity typically occuring during SWS has been implicated in the consolidation effect. In this study we investigate if the consolidation effect can be amplified by the application of a weak transcranial oscillatory electric current within the frequency range of SWS in humans (0,7-0,8 Hz) during daytime SWS.

Detailed Description

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Conditions

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Healthy Subjects

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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SHAM stimulation

SHAM stimulation during periods of Slow Wave Sleep

Group Type EXPERIMENTAL

no stimulation

Intervention Type DEVICE

sham Stimulation

0,75 Hz stimulation

slow transcranial oscillating stimulation (\~0,75Hz) during periods of Slow Wave Sleep

Group Type EXPERIMENTAL

brain stimulation

Intervention Type DEVICE

oscillating direct current brain stimulation

Interventions

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brain stimulation

oscillating direct current brain stimulation

Intervention Type DEVICE

no stimulation

sham Stimulation

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* healthy Subjects
* unobtrusive, neuropsychological screening
* age: 18-35 years
* right handed

Exclusion Criteria

* untreated severe internal or psychiatric diseases
* epilepsy
* other severe neurological diseases eg., previous major stroke, brain tumour
* contraindications to MRI
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Charite University, Berlin, Germany

OTHER

Sponsor Role lead

Responsible Party

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Agnes Flöel

Prof. Agnes Flöel, MD

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Agnes Flöel, Professor

Role: PRINCIPAL_INVESTIGATOR

Charite Universitätsmedizin Berlin - Neurologie

Locations

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Charite CCM Neurologie Berlin

Berlin, State of Berlin, Germany

Site Status

Countries

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Germany

References

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Marshall L, Helgadottir H, Molle M, Born J. Boosting slow oscillations during sleep potentiates memory. Nature. 2006 Nov 30;444(7119):610-3. doi: 10.1038/nature05278. Epub 2006 Nov 5.

Reference Type BACKGROUND
PMID: 17086200 (View on PubMed)

Diekelmann S, Born J. The memory function of sleep. Nat Rev Neurosci. 2010 Feb;11(2):114-26. doi: 10.1038/nrn2762. Epub 2010 Jan 4.

Reference Type BACKGROUND
PMID: 20046194 (View on PubMed)

Mednick SC, Cai DJ, Kanady J, Drummond SP. Comparing the benefits of caffeine, naps and placebo on verbal, motor and perceptual memory. Behav Brain Res. 2008 Nov 3;193(1):79-86. doi: 10.1016/j.bbr.2008.04.028. Epub 2008 May 8.

Reference Type BACKGROUND
PMID: 18554731 (View on PubMed)

Mander BA, Santhanam S, Saletin JM, Walker MP. Wake deterioration and sleep restoration of human learning. Curr Biol. 2011 Mar 8;21(5):R183-4. doi: 10.1016/j.cub.2011.01.019. No abstract available.

Reference Type BACKGROUND
PMID: 21377092 (View on PubMed)

Mednick S, Nakayama K, Stickgold R. Sleep-dependent learning: a nap is as good as a night. Nat Neurosci. 2003 Jul;6(7):697-8. doi: 10.1038/nn1078.

Reference Type BACKGROUND
PMID: 12819785 (View on PubMed)

Ladenbauer J, Ladenbauer J, Kulzow N, Floel A. Memory-relevant nap sleep physiology in healthy and pathological aging. Sleep. 2021 Jul 9;44(7):zsab002. doi: 10.1093/sleep/zsab002.

Reference Type DERIVED
PMID: 33406266 (View on PubMed)

Other Identifiers

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Nap-tSOS-young

Identifier Type: -

Identifier Source: org_study_id

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