GRAViceptive NEGlect Treatment in Acute Stroke Using Targeted Cranial ELECTrotherapy

Inclusion Criteria:

* Supratentorial ischemic stroke diagnosed by neuroimaging and clinical analysis;
* Clinically stable (stable vital signs for 24 hours; no chest pain in the last 24 hours; no significant arrhythmia; no evidence of deep vein thrombosis);
* Normal or corrected-to-normal vision;
* No previous experience with HD-tDCS;
* Ability to provide informed consent (patient or legal representative);
* Ability to comply with the intervention and assessment schedule of the protocol.
* Presence of visual verticality misperception.

Exclusion Criteria:

* Migraine;
* Pregnancy;
* Pacemakers;
* Seizures;
* Claustrophobia;
* Transient ischemic attack;
* Other neurological disorders;
* Psychiatric disorders;
* Sensitive scalp or prior brain surgery;
* Diagnosis of severe carotid atherosclerotic disease (stenosis ≥ 70%);
* Presence of metal implants, cardiac pacemakers, or claustrophobia;
* Diagnosis of COVID-19 or other infectious disease that requires isolation;
* Uncontrolled medical problems, such as terminal cancer or kidney disease.
* Left-handed or mixed-handed individuals as determined using the Edinburgh Handedness Inventory (Appendix 10);
* Peripheral vestibular deficits observed using neuro-otological screening tests when the participant's clinical condition allows (head shake test, head thrust test, Dix-Hallpike, and Pagnini-McClure);
* Prior musculoskeletal disorders affecting alignment and postural balance (e.g., moderate to severe scoliosis; torticollis);
* Cognitive dysfunction outside normal limits on the Mini-Mental State Examination (score below 23);
* Global or Wernicke's aphasia;