Abnormal P300 in a case of delusional misidentification with coinciding
Capgras and Fregoli symptoms

dc.contributor.author	Παπαγεωργίου, Χαράλαμπος	el
dc.contributor.author	Λύκουρας, Λευτέρης	el
dc.contributor.author	Βεντούρας, Ερρίκος Μ.	el
dc.contributor.author	Ουζούνογλου, Νικόλαος Κ.	el
dc.contributor.author	Χριστοδούλου, Γεώργος Ν.	el
dc.date.accessioned	2015-02-02T10:39:16Z
dc.date.available	2015-02-02T10:39:16Z
dc.date.issued	2015-02-02
dc.identifier.uri	http://hdl.handle.net/11400/5458
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.elsevier.com	en
dc.subject	Delusional misidentification syndrome
dc.subject	Electrooculogram
dc.subject	Σύνδρομο λανθασμένης αναγνώρισης με αυταπάτες
dc.subject	Ηλεκτροοφθαλμογράφημα
dc.title	Abnormal P300 in a case of delusional misidentification with coinciding Capgras and Fregoli symptoms	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Neurology
heal.classification	Ιατρική
heal.classification	Νευρολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://skos.um.es/unescothes/C02708
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Νευρολογία
heal.identifier.secondary	doi:10.1016/S0278-5846(01)00293-7
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2002
heal.bibliographicCitation	Papageorgiou, C., Lykouras, L., Ventouras, E., Uzunoglu, N. and Christodoulou, G. (2002). Abnormal P300 in a case of delusional misidentification with coinciding Capgras and Frégoli symptoms. Progress in Neuro-Psychopharmacology & Biological Psychiatry. 26(4). pp.805-810. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 04/06/2002]	en
heal.abstract	The Delusional Misidentification Syndrome (DMS) is thought to be related to dissociation between recognition and identification processes. Working memory (WM) is considered responsible for the integration and online manipulation of information, so that it is available for further processing. Since the P300 component of event-related potentials (ERPs) is considered as an index of the on-line updating of WM, the present study is focused on auditory P300 elicited during a WM test in DMS, compared with that in healthy controls. ERPs, elicited during a WM test, in a case suffering from coinciding Capgras and Frégoli symptoms, were recorded. Peak amplitude and latency of the averaged P300 waveforms, as well as memory performance of this case, were compared to the patterns obtained from healthy controls. In relation to normal controls, the patient exhibited significantly attenuated amplitude of P300 at the F4, P3 and Pz abductions. The patient also showed significantly prolonged latencies of P300 at all abductions used. These findings suggest that DMS may be accompanied by WM dysfunction affecting brain regions outside the prefrontal cortex, as well as within, and by diffuse failure to allocate attention resources to a stimulus, as they are reflected by P300 amplitudes and latencies respectively. Additionally, it may be suggested that techniques designed to explore cognitive operations, such as recording of ERPs, and more specifically P300, during WM tasks, could provide further insights into the relationship between neural functioning and the cognitive deficits in DMS.	en
heal.publisher	Elsevier Science Ltd	en
heal.journalName	Progress in Neuro-Psychopharmacology & Biological Psychiatry	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true