for people ages 18 years and up (full criteria)
study started
estimated completion
Mersedeh Bahr Hosseini(ucla)



This proposal is a prospective, single-center, dose-escalation safety, tolerability, feasibility and potential efficacy study of transcranial direct current stimulation (tDCS) in acute stroke patients with substantial salvageable penumbra due to a large vessel occlusion who are ineligible for intravenous thrombolysis and endovascular therapy.

Official Title

Transcranial Electrical Stimulation in Stroke EaRly After Onset Clinical Trial


This is a single center, sham-controlled, dose escalation study where cathodal tDCS is delivered to threatened but not yet irreversibly damaged (penumbral) tissue in patients with large vessel occlusion who are not eligible for blood flow restoring recanalization procedures. Patients will be randomized in a 3:1 design, to cathodal versus sham (control) stimulation, at each six designed dose tiers. The dose tiers will be increasing in both intensity and duration of the stimulation.

The occurrence of symptomatic intracranial hemorrhage will determine the pace of the escalation through the dose tiers.


Stroke, Acute Stroke Transcranial Direct Current Stimulation


You can join if…

Open to people ages 18 years and up

  1. New focal neurologic deficit consistent with AIS
  2. NIHSS≥4 or NIHSS <4 in the presence of disabling deficits
  3. Age>18;
  4. Presence of any cortical vessel occlusion including ICA, branches of MCA, Anterior Cerebral artery (ACA), Posterior Cerebral artery (PCA), Posterior-Inferior cerebellar artery (PICA);
  5. Presence of salvageable penumbra with Tmax> 6 sec/ ischemic core volume (ADC < 620 μm2/s or rCBF< 30%) ≥ 1.2
  6. Patient ineligible for IV tPA, per national AHA/ASA Guidelines
  7. Patient ineligible for endovascular therapy per AHA/ASA national Guidelines - one or more of: poor prestroke functional status (mRS score >1), mild neurological symptoms (NIHSS <6), large ischemic core (ASPECTS <6), thrombectomy not technically performable due to severe vessel tortuosity, cervical artery chronic occlusion, or other unfavorable angioarchitectural features that preclude endovascular access to the target intracranial vessel. 8) Subject is able to be treated with tDCS within 24 hours of last known well time;

9) A signed informed consent is obtained from the patient or patient's legally authorized representative

You CAN'T join if...

  1. Acute intracranial hemorrhage
  2. Evidence of a large Ischemic core volume (ADC < 620 μm2/s or rCBF< 30%) ≥ 100
  3. Presence of tDCS contraindications - electrically or magnetically activated intracranial metal and non-metal implants.
  4. Severe MR contrast allergy or renal dysfunction with eGFR<30ml/min, precluding MRI gadolinium or CT iodine contrast
  5. Pregnancy
  6. Signs or symptoms of acute myocardial infarction, including EKG findings, on admission
  7. Suspicion of aortic dissection on admission
  8. History of seizure disorder or new seizures with presentation of current stroke
  9. Evidence of any other major life-threatening or serious medical condition that would prevent completion of the study protocol including attendance at the 3-month follow-up visit
  10. . Concomitant experimental therapy
  11. . Preexisting scalp lesion at the site of the stimulation or presence of skull defects (may alter current flow pattern)


  • Univeristy of California- Los Angeles (UCLA) accepting new patients
    Los Angeles California 90095 United States

Lead Scientist


accepting new patients
Start Date
Completion Date
University of California, Los Angeles
Study Type
Last Updated