A Multi-center RCT Study on the Efficacy and Mechanism of Multi-channel tDCS in Rehabilitation of Cognitive Function After Stroke

Inclusion Criteria: * 18-60 year-old * diagnosed cerebral apoplexy, meeting the diagnostic criteria of ICD-10 * cognitive function, perceptual function decline after stroke * first onset and duration of 3-12 months * right-handed * MMSE ≤25 * MoCA ≤25 * sign informed consent voluntarily and comply with the study plan Exclusion Criteria: * NIHSS ≥21 points * MoCA ≤18, or DRS-2 ≤ 124, or CES-D ≥ 16 * taking drugs that affect central nervous activity, such as nerve antagonists * specific contraindication, such as electrode patch allergy, local skin injury or - - - - inflammation, and hyperalgesia in stimulated areas * patients use implantable electronic devices (such as cardiac pacemakers) or have - metal implants such as stents that affect MRI examination * patients with a previous history of epilepsy, mental illness or skull injury * patients with dementia or obvious cognitive dysfunction before stroke * patients with aphasia or dysarthria and cannot complete the scale evaluation * pregnancy