Effects of Brain Stimulation During a Daytime Nap on Memory Consolidation in Older Adults

NCT ID: NCT01840839

Last Updated: 2018-01-30

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

18 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-10-31

Study Completion Date

2015-08-31

Brief Summary

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The beneficial effect of nocturnal as well as daytime sleep on memory consolidation is well-documented in young, healthy subjects. Slow wave sleep (SWS), in particular, with its slow oscillating activity have shown to enhance declarative, hippocampus-dependent memory representations. This impact of sleep on memory performance can be additionally enhanced by exogeneous induction of transcranial slow oscillating stimulation (tSOS) within the frequency range of SWS in humans (0,7- 0,8 Hz) during sleep, as has been demonstrated in young, healthy subjects. If older adults that commonly experiencing cognitive decline, including long-term retention of declarative memory - benefit from transcranial slow oscillatory stimulation (tSOS) during sleep in the same way has not been studied so far. The primary goal of the study is therefore to investigate the impact of oscillating current stimulation (tSOS) during a daytime nap on declarative memory consolidation in older adults.

Detailed Description

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Conditions

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Older Adults (50-90 Years)

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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0,75 Hz stimulation

transcranial slow oscilliating stimulation (tSOS)during periods of SWS

Group Type EXPERIMENTAL

brain stimulation

Intervention Type DEVICE

no stimulation

Sham stimulation during periods of SWS

Group Type SHAM_COMPARATOR

Sham Stimulation

Intervention Type DEVICE

Interventions

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brain stimulation

Intervention Type DEVICE

Sham Stimulation

Intervention Type DEVICE

Other Intervention Names

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oscillating direct current brain stimulation no stimulation

Eligibility Criteria

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Inclusion Criteria

* age: 50-90 years
* right handed
* inobtrusive neuropsychological examination

Exclusion Criteria

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

50 Years

Maximum Eligible Age

90 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: STUDY_CHAIR

Charite Universitätsmedizin Berlin - Neurologie

Agnes Flöel, Professor

Role: PRINCIPAL_INVESTIGATOR

Charite Universitätsmedizin Berlin - Neurologie

Locations

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Charite CCM Neurologie Berlin

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)

Ferrucci R, Mameli F, Guidi I, Mrakic-Sposta S, Vergari M, Marceglia S, Cogiamanian F, Barbieri S, Scarpini E, Priori A. Transcranial direct current stimulation improves recognition memory in Alzheimer disease. Neurology. 2008 Aug 12;71(7):493-8. doi: 10.1212/01.wnl.0000317060.43722.a3. Epub 2008 Jun 4.

Reference Type BACKGROUND
PMID: 18525028 (View on PubMed)

Naismith SL, Lewis SJ, Rogers NL. Sleep-wake changes and cognition in neurodegenerative disease. Prog Brain Res. 2011;190:21-52. doi: 10.1016/B978-0-444-53817-8.00002-5.

Reference Type BACKGROUND
PMID: 21531243 (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, Kulzow N, Passmann S, Antonenko D, Grittner U, Tamm S, Floel A. Brain stimulation during an afternoon nap boosts slow oscillatory activity and memory consolidation in older adults. Neuroimage. 2016 Nov 15;142:311-323. doi: 10.1016/j.neuroimage.2016.06.057. Epub 2016 Jul 2.

Reference Type RESULT
PMID: 27381076 (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-aged

Identifier Type: -

Identifier Source: org_study_id

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