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Title: Signal analysis methods to discriminate between obsessive-compulsive disorder (OCD) patients and healthy controls
Authors: Καλατζής, Ιωάννης
Πήλιουρας, Νικόλαος
Γκλώτσος, Δημήτριος
Βεντούρας, Ερρίκος Μ.
Παπαγεωργίου, Χαράλαμπος
Contributors: Ραμπαβίλας, Ανδρέας Ν.
Σολδάτος, Κωνσταντίνος Ρ.
Κάβουρας, Διονύσης Α.
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Pattern recognition;Support vector machines;Αναγνώριση προτύπων;Μηχανές διανυσμάτων υποστήριξης
Subjects: Medicine
Medical technology
Ιατρικά όργανα και εξοπλισμός
Issue Date: 29-Jan-2015
Publisher: University of Patras
Abstract: A series of Event-Related Potential (ERP) signals were analyzed with pattern recognition methods using new morphological features and powerful classifiers, in an attempt to develop a computer-aided discrimination system of OCD patients from controls. Eighteen OCD patients and twenty controls were examined. All subjects were evaluated by a computerized version of the digit span subtest of the Wechsler Adult Intelligence Scale. EEGs were recorded from 15 scalp leads. From the P600 component of each signal nineteen waveform-features were calculated. The 3rd-degree Least Squares - Minimum Distance classifier (LSMD3C) and the Support Vector Machines classifier (SVMC) were developed. The LSMD3C was fed with features from all leads and the best feature combinations were inputted into the SVMC to improve the classification results. Highest overall accuracy (89.5%) was found at the C6 lead indicating that OCD patients may present deficits related to working memory mechanisms corresponding to the right temporocentral region.
Description: Proceedings of the 1st International Conference on Experiments/Process/System Modelling/Simulation/Optimization (1st IC-EpsMso) (CD-ROM)
Language: English
Citation: Kalatzis, I., Piliouras, N., Glotsos, D., Ventouras, E., Papageorgiou, C., et al. (2005). Signal analysis methods to discriminate between obsessive-compulsive disorder (OCD) patients and healthy controls. In the 1st International Conference on Experiments/Process/System Modelling/Simulation/Optimization. University of Patras: Athens, 6th-9th July 2005.
Conference: International Conference on Experiments/Process/System Modelling/Simulation/Optimization
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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