Please select the eligibility criteria that correspond to the clinical trial below.
Title: N/A
Brief Summary: After stroke a limited motor recovery in the paretic upper limb accounts for a large proportion of the disabling sequelae. Only about 15% of those with initial complete upper limb paralysis after stroke recover functional use of their impaired arm in daily life.

The aim of this study is to test the effects of tDCS combined with upper extremity robot-assisted therapy on stroke survivors.


Options:
A: Inclusion Criteria:

* Ischemic or hemorrhagic stroke onset 3 - 9 weeks before the recruiting, confirmed by computed tomography or magnetic resonance imaging.
* Moderate to severe motor impairment of an upper limb, defined as a score between 7 - 42 on the Upper Limb Subscale of Fugl Meyer Assessment of Sensorimotor Recovery after stroke.
* Ability to provide written informed consent (patient ou legal representative)
* Ability to comply with the schedule of interventions and evaluations in the protocol.

Exclusion Criteria:

* Severe spasticity at the paretic elbow, wrist or fingers, defined as a score of \> 3 on the Modified Ashworth Spasticity Scale.
* Upper limb plegia
* Uncontrolled medical problems such as end-stage cancer or renal disease
* Pregnancy
* Seizures, except for a single seizure during the first week post stroke
* Pacemakers
* Other neurological disorders such as Parkinson's disease
* Psychiatric illness including severe depression
* Aphasia ou severe cognitive deficits that compromise comprehension of the experimental protocol or ability to provide consent.
* Hemineglect
* Drugs that interfere on cortical excitability, except for antidepressants
* Cerebellar lesions
B: Inclusion Criteria:

* Have been admitted to a hospital unit for stroke rehabilitation
* Within 10 weeks post-stroke
* 19 years or older
* Are experiencing difficulty walking

Exclusion Criteria:

* Requires greater than one person assist for transfer or ambulation
* Have uncontrolled medical condition or another serious medication condition in addition to stroke
* Unable to understand or follow directions
C: Inclusion Criteria:

* Males and females subjects. Age \> 18 years.
* Diagnosis of first ischemic stroke
* Impairment of the upper limb
* Trunk control defined in the Trunk-Control Test (TCT), with a score \> 50.

Exclusion Criteria:

* anyone who does not have adequate understanding of verbal or written information in Italian sufficient to complete any test
* Impaired cognitive functioning: score less than 24 on the Mini Mental Status Examination (MMSE)
* contraindications to single-pulse transcranial magnetic stimulation (TMS)(TMS will be used to measure cortical excitability): presence of a history of epilepsy, frequent headaches or neck pain, implantable devices (ventriculoperitoneal shunts, pacemakers, intrathecal pumps, intracranial metal implants)
* Contraindications to tDCS: intracranial metal implants that can be stimulated, incorrectly positioned or over-heated by the electric current
* Neurological or psychiatric pathology
* severe cardio-pulmonary, renal, hepatic diseases
* Pregnancy
D: Inclusion Criteria:

1. Age over 21 years
2. Ischemic stroke confirmed by CT or MRI within the previous 6 weeks
3. No history of prior ischemic or hemorrhagic stroke with associated motor deficits (prior stroke with no motor symptoms is allowed)
4. Residual unilateral arm weakness with Fugl-Meyer Upper Extremity (FM-UE) score 6-40 at time of enrollment.
5. Ability to give informed consent and understand the tasks involved.

Exclusion Criteria:

1. Space-occupying hemorrhagic transformation or associated intracranial hemorrhage.
2. Arm impairment that is too severe or too mild on day of baseline testing just prior to beginning of the study intervention.
3. Recent botox injection to upper limb or planned botox injection over the course of the 7-month study duration.
4. Cognitive impairment, with score on Montreal Cognitive Assessment (MoCA) ≤ 20.
5. History of physical or neurological condition that interferes with study procedures or assessment of motor function (e.g. severe arthritis, severe neuropathy, Parkinson's disease).
6. Inability to sit in a chair and perform upper limb exercises for one hour at a time.
7. Participation in another upper extremity rehabilitative therapy study during the study period.
8. Terminal illness
9. Social and/or personal circumstances that interfere with ability to return for therapy sessions and follow up assessments.

Answer: C