Influence of tDCS on Cortical Plasticity in Patients With Mild Cognitive Impairment (MCI)

May 12, 2021 updated by: Agnes Flöel, Charite University, Berlin, Germany

Influence of Transcranial Direct Current Stimulation on Cortical Plasticity in Patients With Mild Cognitive Impairment (MCI)

The aim of this study is to investigate whether the anodal transcranial direct current stimulation (tDCS) over the primary motor cortex (M1) in patients with mild cognitive impairment (MCI) leads to an increase in cortical plasticity (change in motor evoked potentials (MEP) in mV).

Study Overview

Study Type

Interventional

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Berlin, Germany, 10117
        • Klinik und Poliklinik für Neurologie, Charité Universitätsmedizin Berlin

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Right-handed according to the Oldfield Händigkeits inventory (lateralization index> 70) (1971)
  • Cognitive impairment according to the diagnostic criteria of a MCI (amnesic or even multiple domains)
  • No therapeutic treatment with AChE inhibitors
  • No motor impairments relevant to everyday life
  • Age 50 to 80 years

Exclusion Criteria:

  • Severe neurological / psychiatric or pre-existing internist conditions because additional cognitive deficits are expected
  • Epilepsy, epileptic seizure in medical history
  • Cognitive deficit (MMSE <20)
  • Depressive episode (Beck Depression Inventory (BDI)> 12)
  • Newly taking (<3 months) centrally active drugs, particularly acetylcholinesterase inhibitors
  • Pregnancy
  • Pacemaker (contraindication for MRI)
  • Other metal parts in the body (contraindication for MRI)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: transcranial direct current stimulation
Placebo Comparator: sham stimulation

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
the anodal transcranial direct current stimulation over the primary motor cortex (M1) in patients with mild cognitive impairment (MCI)
Time Frame: 1 week
to investigate whether the anodal transcranial direct current stimulation over the primary motor cortex (M1) in patients with mild cognitive impairment (MCI) increases cortical plasticity (measured via motor evoked potentials) compared to sham stimulation
1 week

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
genetic polymorphism, ApoE4
Time Frame: once
optional assessment of genetic Apo4 epsilon status for assessment of differences in cortical plasticity and elasticity between Apo4 epsilon positive and negative participants
once
Comparison of tDCS-induced changes on central cholinergic activity
Time Frame: 1 week
to investigate weather the anodal transcranial direct current stimulation affect central cholinergic activity (measured via a TMS protocol) in MCI patients compared to sham stimulation
1 week
Comparison of tDCS-induced changes in learning success
Time Frame: 1 week
tDCS-induced changes in learning success (performance in a motor learning paradigm in patients with MCI after tDCS vs. sham stimulation)
1 week
MR elastography
Time Frame: 1 week
Comparison of viscoelastic parameters in cerebral MR elastography in patients with MCI
1 week

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2013

Primary Completion (Anticipated)

October 1, 2017

Study Completion (Anticipated)

December 1, 2017

Study Registration Dates

First Submitted

June 25, 2013

First Submitted That Met QC Criteria

June 25, 2013

First Posted (Estimate)

June 27, 2013

Study Record Updates

Last Update Posted (Actual)

May 14, 2021

Last Update Submitted That Met QC Criteria

May 12, 2021

Last Verified

May 1, 2021

More Information

Terms related to this study

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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