The Hi-tACS on Cognitive Function in Patients With Schizophrenia

Inclusion Criteria: 1. Meets the diagnostic criteria for schizophrenia according to DSM-5. 2. Age ≥ 18 years old. 3. Right-handed. 4. Willing to participate in this study and sign an informed consent form. If the participant is unable to read and sign the informed consent form due to lack of capacity, a legal guardian must act as a proxy during the informed consent process and sign the form. 5. Clinically stable, receiving antipsychotic medication treatment with a stable dose for 4 weeks without any changes. 6. Montreal Cognitive Assessment score ≥ 10 points. Exclusion Criteria: 1. Psychotic disorders caused by split affective disorder, bipolar disorder, intellectual disability, anxiety spectrum disorders, drugs, alcohol, and other psychoactive substances according to DSM-V diagnostic criteria. 2. Those with severe or unstable organic diseases, with a history of brain tumors or epilepsy. 3. Those who have received MECT or TMS treatment within 1 month before enrollment. 4. Skin integrity at the electrode placement site is compromised. Allergy to electrode gel or adhesive. 5. Implants of metal or electronic devices (such as pacemakers, cochlear implants, deep brain stimulators, aneurysm clips, internal fixation devices after ventriculoperitoneal shunt surgery, etc.). 6. Participation in any other clinical trials within 1 month prior to baseline. 7. Pregnant and lactating women. 8. The investigator believes that there are inappropriate conditions for participating in this study.