The purpose of this study is to investigate whether brain imaging-based hand function area tDCS stimulation is more effective than conventional stimulation or sham stimulation for improving hand motor function.

Inclusion Criteria:

• Unilateral stroke patients aged 19 to 80 years
• Patients with subacute stroke within 4 weeks of onset
• Patients with moderate or severe upper extremity dysfunction with an upper extremity FMA score of less than 58 in motor function evaluation

Exclusion Criteria:

• Accompanied by an existing serious neurogenic disease

• Existing significant psychiatric disorders such as major schizophrenia, bipolar disorder, and dementia.

• If there are difficulties in conducting the research

• Any patients who are judged by the investigator to be difficult to participate in this study

• Exclusion criteria for transcranial direct current stimulation:

  i) Patients with implanted medical devices in the body (e.g. pacemakers) ii) When a metal object is inserted in the skull iii) If there is a wound on the skin of the attachment site iv) history of epilepsy v) Pregnant and lactating women