Stroke Clinical Trial - Enhancing Sleep Dependent Consolidation by

Status Completed

Clinical Trial Summary

Stroke, one of the most common causes for acquired adult disability, is not only a burden for the individual but also for his or her close relatives and caregivers. Functional recovery is commonly associated with the re-acquisition of lost skills. This skill (re-)acquisition is separated into different phases during which learning takes place while the skill/movement is actively performed - so called online learning - or during the time of non-performance between the training - so called offline learning or consolidation. During the initial phase of training, performance improvements are commonly steep (online learning). During the following processes of consolidation, which often depend on sleep, memory traces are being modified and stored for long-term memory retention leading to a further improvement without additional training (offline learning). Previous studies focusing on individuals after stroke could show a beneficial effect of sleep on motor skill acquisition. As an intervention, transcranial electrical stimulation (tES) with motor tasks could show beneficial effects on motor skill acquisition. tES is a method to stimulate an area of the brain non-invasively and this is done by applying low voltage current to the scalp that lies in close proximity to the target brain region. In the current study, stimulation is performed during sleep and types of stimulation resemble natural sleep physiology: slow-wave and spindles. As slow-wave and spindles are shown to be important for memory consolidation, it is hypothesized that applying physiologically-inspired stimulation could enhance memory consolidation in individuals after stroke. It is known that patterns of sleep physiology change in older individuals, thus, this population is also investigated in the current study. It is interpreted and discussed that older individuals do not benefit from sleep as much as younger individuals do. Thus, it is hypothesized that applying physiologically-inspired stimulation could enhance memory consolidation in healthy older individuals.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Aging
Stroke

Clinical Trial Details

NCT number	NCT05843656
Study type	Interventional
Source	Ecole Polytechnique Fédérale de Lausanne
Contact
Status	Completed
Phase	N/A
Start date	March 20, 2019
Completion date	March 19, 2022

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See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Enhancing Sleep Dependent Consolidation by Non-invasive Brain Stimulation — E-ConS

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms