**Study Overview** The study is about using a technique called **tDCS** (transcranial Direct Current Stimulation), where a small electrical current is passed through the brain to help improve **motor function** (how we move our bodies). Researchers want to see if walking while receiving tDCS can help improve things like walking style (gait), speaking (articulation), eye movement, and hand coordination (motor dexterity). They're also curious if it helps people with certain conditions like **cortical basal syndrome** and **Parkinson's disease**, which affect how the brain controls movement. **Key Points:** - **Study Length:** Participation involves walking sessions; exact number of sessions not specified. - **Participants Needed:** 30 people with each condition (cortical basal syndrome, Parkinson's) will be included. - **Eligibility:** Participants must walk daily, can use a walker or cane, and speak English. Those with metal brain implants cannot join. This study aims to help us understand how well tDCS works for different people and conditions, and what factors might affect recovery. Participation helps advance research in improving motor skills for those with movement disorders.