Efficacy and Safety of Individualized Sequential Accelerated Theta Burst Stimulation in Improving Cognitive Function in Schizophrenia

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The goal of this clinical trial is to learn if sequential dual-site accelerated theta burst stimulation (SD-aTBS) targeting the frontoparietal network and default mode network works to improve cognitive function in adults with schizophrenia. It will also learn about the safety of SD-aTBS. The main questions it aims to answer are: Does SD-aTBS improve cognitive function in participants with schizophrenia? What are the neurobiological mechanisms (brain network and synaptic plasticity changes) underlying the effects of SD-aTBS? Researchers will compare real SD-aTBS to sham stimulation to see if SD-aTBS is effective and safe for treating cognitive impairment in schizophrenia. Participants will: Receive real SD-aTBS or sham stimulation for 10 consecutive working days Complete clinical symptom assessments, cognitive function tests, MRI scans, and EEG recordings at baseline, after treatment, and 1 month after treatment Undergo SV2A-PET scans at baseline and 1 month after treatment