This clinical trial compares two types of robotic hand rehabilitation-brain wave (EEG)-timed therapy versus simple repetitive therapy-to see which is more effective for recovering hand function in patients with chronic stroke. Participants will be randomly assigned to either group and will attend sessions using a wearable robotic hand device while wearing an EEG cap. In the EEG-timed group, the robot assists hand movements when participants successfully imagine moving and create specific brain signals, whereas in the repetitive group, the robot moves the hand automatically at set intervals. Both groups will receive a matched dose of robotic training to ensure a fair comparison of how the brain and hand function respond to the therapy.

Inclusion Criteria:

• Patients diagnosed with stroke.
• Adults aged 19 to 85 years old at the time of screening.

Exclusion Criteria:

• Patients with severe, uncontrolled medical conditions.
• Patients with uncontrolled hypertension, diabetes mellitus, or renal disease.
• Patients with severe cognitive impairment that prevents them from following instructions for motor tasks (Mini-Mental State Examination [MMSE] score of 15 or below).

Note: Patients with an MMSE score of 15 or below may still be included if the Principal Investigator (or a delegated physician) determines that they have the capacity to perform the tasks and provide informed consent.