If there is a comparison group: Researchers will compare [insert groups] to see if [insert effects]

The purpose of the clinical trial is to find a treatment for stroke patients with cognitive impairment, and the main questions it aims to answer are:

• [Search for effective treatments of cognitive impairment after stroke]
• [Explore brain network features with functional near-infrared spectroscopy] Participants will receive conventional treatment, tDCS treatment, or rTMS treatment, or tDCS-rTMS treatment.

And then compare cognitive function and brain function.

Inclusion Criteria:

• Meet the clinical diagnostic criteria of the Expert Consensus on the Management of Cognitive Impairment after Stroke in 2021;
• 30-80 years old, right-handed, unilateral hemiplegia;
• Verbal expression can cooperate with the completion of the evaluation, sustained attention time is longer than 5 minutes;
• Simple Mental State Examination Scale (MMSE) score ≤26 points; MoCA scale score < 26 points; Memory test (RMBT) score less than 21 points;
• patients or their family agree to sign the informed consent;
• The Ethics Committee approved the trial.

Exclusion Criteria:

• Memory dysfunction caused by other diseases, such as Alzheimer's disease, lewy body dementia, pituitary tumor surgery, hypothyroidism, etc.;
• There are contraindications of rTMS and tDCS for untreated intracranial aneurysms, severe epilepsy, intracranial metal, etc.
• Patients with severe visual, cognitive or speech impairment who cannot cooperate with treatment;
• The condition is not stable; Or other serious physical diseases.