Psychophysiological differences in schizophrenics with and without delusional misidentification syndromes

dc.contributor.author	Παπαγεωργίου, Χαράλαμπος	el
dc.contributor.author	Λύκουρας, Λευτέρης	el
dc.contributor.author	Αλεβίζος, Βασίλειος	el
dc.contributor.author	Βεντούρας, Ερρίκος Μ.	el
dc.contributor.author	Μουρτζούχου, Πολυξένη Κ.	el
dc.date.accessioned	2015-02-02T18:02:06Z
dc.date.available	2015-02-02T18:02:06Z
dc.date.issued	2015-02-02
dc.identifier.uri	http://hdl.handle.net/11400/5511
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	Schizophrenia
dc.subject	Cognition
dc.subject	Σχιζοφρένεια
dc.subject	Γνώση
dc.title	Psychophysiological differences in schizophrenics with and without delusional misidentification syndromes	en
heal.type	journalArticle
heal.secondaryTitle	a P300 study	en
heal.classification	Medicine
heal.classification	Psychiatry
heal.classification	Ιατρική
heal.classification	Ψυχιατρική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://skos.um.es/unescothes/C03187
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Ψυχιατρική
heal.contributorName	Ουζούνογλου, Νικόλαος Κ.	el
heal.contributorName	Χριστοδούλου, Γεώργιος Ν.	el
heal.contributorName	Ραμπαβίλας, Ανδρέας Ν.	el
heal.identifier.secondary	doi:10.1016/j.pnpbp.2005.01.016
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2005
heal.bibliographicCitation	Papageorgiou, C., Lykouras, L., Alevizos, B., Ventouras, E., Mourtzouchou, P., et al. (May 2005). Psychophysiological differences in schizophrenics with and without delusional misidentification syndromes: a P300 study. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 29(4). pp. 593–601. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 17/03/2005]	en
heal.abstract	There is a debate on whether delusional misidentification syndromes (DMSs) and schizophrenia are distinct disorders. Information-processing deficits have been found in both. Since the P300 component of event-related potentials (ERPs) reflects attention and working memory (WM) mechanisms, the P300 elicited during a WM test was studied in schizophrenic patients with DMS in comparison to schizophrenic patients without DMS and controls. Nine schizophrenic patients with DMS, 11 without DMS and 11 healthy controls were tested with a computerized version of the digit span test of the Wechsler batteries. Auditory ERPs were measured during the anticipatory period of the test. P300 amplitude in prefrontal areas was found to be significantly reduced in schizophrenics without DMS and markedly less in DMS patients compared to controls. P300 latency in the central midline brain region was significantly prolonged in DMS patients compared to the other groups. Memory performance was significantly reduced in both patient groups as compared to healthy controls. The results may indicate abnormalities in both allocation of attentional resources and automatic orienting in schizophrenic patients with DSM. In contrast, even though schizophrenic patients without DMS exhibit partial similarities with patients suffering from DMS, they show excessive reduction of P300 amplitude located at the left frontal area. Future studies might clarify these issues.	en
heal.publisher	Elsevier Science Ltd	en
heal.journalName	Progress in Neuro-Psychopharmacology and Biological Psychiatry	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true