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NCT06864910

Brain Functional Changes Accompany Modulatory Effects of Transcranial Direct Current Stimulation in Cognitive Impairment

Completed Last updated 7 March 2025
What this trial tests

trial testing anodal transcranial Direct Current Stimulation in Cognitive Impairment in 40 participants. Completed in 16 December 2022.

Timeline
5 August 2019
Primary endpoint
16 December 2022
16 December 2022

Quick facts

Lead sponsorNational Institute of Mental Health and Neuro Sciences, India
StatusCompleted
Study typeOBSERVATIONAL
Enrollment40
Start date5 August 2019
Primary completion16 December 2022
Estimated completion16 December 2022
Sites2 locations across India

Drugs / interventions tested

Conditions studied

Sponsor

National Institute of Mental Health and Neuro Sciences, India

Who can join

55 and older, any sex, with Cognitive Impairment. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The goal of this observational study was to examine the brain functional alterations accompanying cognitive modulatory effect of anodal transcranial Direct Current Stimulation (tDCS) in sample patients with early Alzheimer's Disease (AD), registered under Geriatric Clinic and Services at NIMHANS, and who were initiated on tDCS for cognitive enhancement. Further, to explore the potential beneficial effect of tDCS, the investigators offered the intervention to the first 40 consenting patients from the amnestic Mild Cognitive Impairment (aMCI) (n=21) and mild AD (n=19) samples. The changes in functional connectivity/activations associated with diminished cognitive functions were examined using functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG), between pre- and post-tDCS intervention. The administration of tDCS followed the standard procedures using a neuroConn DC-Stimulator Plus device (neuroCare Group GmbH, Munich, Germany) with the anode placed at F3 (left DLPFC) and the cathode over the right supraorbital region (Fp2) using 5x7cm electrodes. The anodal tDCS intervention involved daily sessions (between 10-11 a.m.) for 10 consecutive days, wherein a direct current (DC) of 2 mA was administered for 20 minutes (with additional ramp-up and ramp-down phase of 20 seconds each at the beginning and end of the session respectively), adhering to stringent safety measures.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

  1. A functional MRI and magnetoencephalography study of the cognitive modulatory effect of transcranial direct current stimulation in early Alzheimer's disease.
    Joshi H, Nair G, Roy AA, Havanur S, et al · · 2026 · PMID 41993066 · DOI 10.3389/fnhum.2026.1767772

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Other recruiting trials for Cognitive Impairment

Currently open trials in the same condition.

Other National Institute of Mental Health and Neuro Sciences, India trials

Trials by the same sponsor.

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Data sources for this page

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