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Cerebellar Stimulation for Aphasia Rehabilitation

NCT05093673 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-03-20

No results posted yet for this study

Summary

The optimal site of neuromodulation for post-stroke aphasia has yet to be established. This study will investigate whether multiple sessions of cerebellar transcranial direct current stimulation (tDCS) boosts language therapy in helping people recover from aphasia as well as predict who is likely to respond to cerebellar tDCS.

Conditions

Interventions

DEVICE

Cathodal Cerebellar tDCS

2 mA of cathodal tDCS is induced between two 5cm X 5cm saline soaked sponges where the cathode sponge is placed on the right cerebellum. Ramping up of the current to 2 mA occurs over 15-30 seconds to allow participants to habituate to the tingling sensation. The stimulation will be delivered at an intensity of 2 mA for a maximum of 25 minutes.

BEHAVIORAL

Semantic Feature Analysis (SFA)

Semantic Feature Analysis (SFA) is a treatment technique designed to improve lexical retrieval by increasing the level of activation within a semantic network. The treatment will proceed according to a series of steps including naming aloud the target picture, generating semantic features, naming aloud the target picture again, and generating a sentence using the target word.

DEVICE

Sham

2 mA of cathodal tDCS is induced between two 5cm X 5cm saline soaked sponges where the cathode sponge is placed on the right cerebellum. Ramping up of the current to 2 mA occurs over 15-30 seconds to allow participants to habituate to the tingling sensation. Then, the current will be ramped back down to 0 mA in the sham condition. Termination of the stimulation after the ramping up process is generally undetectable, and the brief duration of stimulation yields no functional effects.

Sponsors & Collaborators

  • National Institute on Deafness and Other Communication Disorders (NIDCD)

    collaborator NIH

  • Johns Hopkins University

    lead OTHER

Principal Investigators

  • Rajani Sebastian, PhD · Johns Hopkins University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
99 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-10-25
Primary Completion
2027-09-01
Completion
2028-04-01

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05093673 on ClinicalTrials.gov