Electroencephalogram (EEG) and Electroconvulsive Therapy(ECT) Response in Schizophrenia

Study Overview
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Brief Summary
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This study is designed to find quantitative Electroencephalogram(qEEG) biomarkers to predict Electroconvulsive Therapy(ECT) Response in Schizophrenia

Detailed Description
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The purpose of this proposal is to explore quantitative Electroencephalogram(qEEG) biomarkers that would predict Electroconvulsive Therapy(ECT) Response in Schizophrenia (SZD). The investigators will recruit 30 SZD patients who are preparing for ECT treatment and assesse psychotic symptoms using Positive and Negative symptom scale(PANSS) before and after 8-sessions clinical course of ECT treatment. These patients needed ECT treatment are assessed by clinicians according to American Psychiatric Association(APA) guidelines. Meanwhile resting EEG will be recorded for 10 minutes before the first episode of ECT treatment. Decrease of PANSS scores will be calculated after the last session of ECT treatment to distinguish responder/non-responder.

Official Title
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Pretreatment Electroencephalogram (EEG) May Predict Electroconvulsive Therapy(ECT) Effect in Schizophrenia

Conditions
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Schizophrenia

Intervention / Treatment
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* Procedure: Electroconvulsive therapy(ECT)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: DSM-5 criteria for SZD patients needed ECT treatment assessed by clinicians using American psychological Association(APA) guidelines. symptoms must be of at least moderate severity (PANSS score >71) age between 18 to 60 years old medications will be stable for at least four weeks prior to ECT, and there will be no dose changes unless medically necessary Exclusion Criteria: any additional current psychiatric comorbidity pregnancy or prepare to have a baby current use of any Antiepileptic drugs history of taking any kinds of Physicotherapeutics within 6 months severe psychotic symptoms that make patients could not accomplish the clinical interview

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| schizophrenia patients needed ECT treatment<br>Whether patients need ECT treatment are assessed by clinicians according to American Psychiatric Association(APA) guidelines. | Procedure: Electroconvulsive therapy(ECT)<br>* Patients recieve 8-sessions ECT treatments and those kinds of drugs they take since they were recruited remain unchanged during this study.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Positive and negative syndrome scale（PANSS）score | It assessed the severity of psychotic symptoms.The responder on PANSS is defined as a PANSS decrease at least 25% from the baseline at post-treatment. PANSS helps us divide cases into response and nonresponse group. | up to 4 weeks | 
| EEG functional connectivity difference between response and nonresponse group | This is a predictive indicator collected before ECT treatment. After treatment, we divided 30 patients into response and nonresponse group using PANSS. Then we explore differences in pretreatment EEG functional connectivity at different frequency bands (Alpha, Beta, Delta, and Theta) to find a predictable biomarker for ECT treatment effect. | through study completion, an average of 6 months |