Effects of Brain Stimulation During Nocturnal Sleep on Memory Consolidation in Elderly Healthy Subjects

NCT ID: NCT01791790

Last Updated: 2021-05-24

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

32 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-01-31

Study Completion Date

2016-12-31

Brief Summary

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The beneficial effect of nocturnal sleep on memory consolidation is well-documented 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. Recent evidence in young healthy subjects suggest that the sleep-associated 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 SWS. If elderly, healthy subjects benefit from transcranial slow oscillatory stimulation (tSOS) during nocturnal sleep as well has not been studied so far. The primary aim of the present study is to investigate the influence of a weak slow oscillating brain stimulation (tSOS) on declarative memory consolidation applied during periods of nocturnal SWS in elderly healthy subjects.

Detailed Description

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Conditions

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Elderly 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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0,75 Hz stimulation

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

Group Type EXPERIMENTAL

Stimulation

Intervention Type DEVICE

SHAM stimulation

SHAM stimulation during periods of Slow Wave Sleep

Group Type SHAM_COMPARATOR

SHAM

Intervention Type DEVICE

no stimulation

Interventions

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Stimulation

Intervention Type DEVICE

SHAM

no stimulation

Intervention Type DEVICE

Other Intervention Names

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oscillating direct current brain stimulation

Eligibility Criteria

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Inclusion Criteria

* elederly, healthy Subjects
* unobtrusive, neuropsychological screening
* age: 50-90 years
* right handed

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

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)

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)

Marshall L, Molle M, Hallschmid M, Born J. Transcranial direct current stimulation during sleep improves declarative memory. J Neurosci. 2004 Nov 3;24(44):9985-92. doi: 10.1523/JNEUROSCI.2725-04.2004.

Reference Type BACKGROUND
PMID: 15525784 (View on PubMed)

Passmann S, Kulzow N, Ladenbauer J, Antonenko D, Grittner U, Tamm S, Floel A. Boosting Slow Oscillatory Activity Using tDCS during Early Nocturnal Slow Wave Sleep Does Not Improve Memory Consolidation in Healthy Older Adults. Brain Stimul. 2016 Sep-Oct;9(5):730-739. doi: 10.1016/j.brs.2016.04.016. Epub 2016 Apr 28.

Reference Type RESULT
PMID: 27247261 (View on PubMed)

Other Identifiers

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Nighttime sleep-tSOS-Old

Identifier Type: -

Identifier Source: org_study_id

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