Could a gentle brain zap boost stroke arm recovery?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * present a clinical diagnosis of stroke confirmed by imaging examination and/or report issued by a neurologist; - are in the chronic phase of the lesion with an occurrence time greater than six months; - hemiparesis with brachial predominance, mild to moderate motor deficit in the affected upper limb defined by a score between 19 and 55 points on the FMA-UE; - have minimum joint integrity to perform the movements required in the protocol with an active range of motion of at least 20° of wrist extension, 10° of extension of the metacarpophalangeal and interphalangeal joints and 20° of elbow extension considering the standard position of 90° elbow flexion, measured with a Carci® goniometer; - demonstrate the ability to understand and follow simple commands on the Mini Mental State Examination (MMSE) (ANNEX II) with a score higher than 23 points for literate persons and lower than 15 points for illiterate persons. Exclusion Criteria: - diagnosis of epilepsy; - intracranial metallic implants or implantable electronic devices; - contraindications to transcranial direct current stimulation (tDCS), including skin lesions on the scalp; - severe musculoskeletal limitations that prevent the execution of tasks; - history of recurrent stroke; - associated disabling musculoskeletal and neurological pathologies; (7) use of botulinum toxin in the previous three months; - uncontrolled systemic arterial hypertension or diabetes mellitus; - clinically relevant heart disease; - apraxia and aphasia of comprehension; - fracture and pain during movement or displacement of the affected limb, or pain related to shoulder subluxation. Those who feel uncomfortable, drop out of the research, do not respect the rules established in the Informed Consent Form (APPENDIX C), or do not attend the stages of the study will also be excluded.