Volume 12, Issue 3 (12-2025)
jhbmi 2025, 12(3): 216-235 |
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Tamkin M R, Jalalkamali H, Nezam Abadi-pour H. Classification of Schizophrenia Patients using EEG- based Functional Connectivity Map. jhbmi 2025; 12 (3) :216-235
URL: http://jhbmi.ir/article-1-869-en.html
URL: http://jhbmi.ir/article-1-869-en.html
Assistant Professor, PhD in Cognitive Neuroscience, Computer Engineering Group, Higher Education Complex of Zarand, Shahid Bahoner University of Kerman, Kerman, Iran & Department of Biomedical and Clinical Sciences, Linkoping University, Linkoping, Sweden
Abstract: (23 Views)
Introduction: Functional brain connectivity derived from electroencephalography (EEG) has been widely used to investigate dynamic cognitive processes, information flow in the brain, and the diagnosis of neurological and psychiatric disorders such as schizophrenia. Schizophrenia is a complex disorder characterized by disruptions in functional and attentional brain networks. Accurately examining these alterations requires analytical approaches with high temporal resolution and network-based modeling capabilities. The aim of this study was to analyze patterns of effective brain connectivity in patients with schizophrenia compared with healthy individuals using EEG data and to apply advanced deep learning models for group classification.
Method: This study analyzed EEG-based brain connectivity networks of 17 healthy participants and 19 patients with schizophrenia while they performed a task involving the comparison of unilateral and bilateral visual processing. After data processing, functional brain graphs were constructed, and four graph-theoretical metrics including node strength, global efficiency, clustering coefficient, and modularity index were calculated. These features were then used to classify healthy participants and patients with schizophrenia using a deep learning model based on a Long Short-Term Memory (LSTM).
Results: The performance of the classification model was evaluated using accuracy, precision, recall, and F-score metrics. The proposed method achieved an accuracy of 94%, outperforming previous studies that classified patients with schizophrenia and healthy participants based on functional connectivity features.
Conclusion: The results demonstrate the effectiveness of an LSTM-based recurrent deep learning model in distinguishing patients with schizophrenia from healthy individuals using EEG data. Additionally, the significance of features obtained from the functional brain graph and the task utilized is emphasized. The high classification accuracy suggests that the observed deficits in attention-related brain networks in patients with schizophrenia particularly during unilateral and bilateral visual processing. These deficits represent reliable neural markers differentiating patients with schizophrenia from healthy individuals.
Method: This study analyzed EEG-based brain connectivity networks of 17 healthy participants and 19 patients with schizophrenia while they performed a task involving the comparison of unilateral and bilateral visual processing. After data processing, functional brain graphs were constructed, and four graph-theoretical metrics including node strength, global efficiency, clustering coefficient, and modularity index were calculated. These features were then used to classify healthy participants and patients with schizophrenia using a deep learning model based on a Long Short-Term Memory (LSTM).
Results: The performance of the classification model was evaluated using accuracy, precision, recall, and F-score metrics. The proposed method achieved an accuracy of 94%, outperforming previous studies that classified patients with schizophrenia and healthy participants based on functional connectivity features.
Conclusion: The results demonstrate the effectiveness of an LSTM-based recurrent deep learning model in distinguishing patients with schizophrenia from healthy individuals using EEG data. Additionally, the significance of features obtained from the functional brain graph and the task utilized is emphasized. The high classification accuracy suggests that the observed deficits in attention-related brain networks in patients with schizophrenia particularly during unilateral and bilateral visual processing. These deficits represent reliable neural markers differentiating patients with schizophrenia from healthy individuals.
Type of Study: Original Article |
Subject:
Artificial Intelligence in Healthcare
Received: 2024/06/3 | Accepted: 2024/12/9
Received: 2024/06/3 | Accepted: 2024/12/9
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