Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task

Changes in personal identity have been described as a major component in the expression of schizophrenia. Considering current evidence that relates the cortical structures of the medial line with the self, we hypothesize that there are differences in the frontomedial electrophysiological activation...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	SILVA,JAIME R, TORRES,WALTER M, ORTIZ,MANUEL S
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2008
Materias:	schizophrenia event related potential self
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000200003
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-97602008000200003
record_format	dspace
spelling	oai:scielo:S0716-976020080002000032009-03-24Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution TaskSILVA,JAIME RTORRES,WALTER MORTIZ,MANUEL S schizophrenia event related potential self Changes in personal identity have been described as a major component in the expression of schizophrenia. Considering current evidence that relates the cortical structures of the medial line with the self, we hypothesize that there are differences in the frontomedial electrophysiological activation in schizophrenics when compared to normal subjects during tasks that require this function. In an experimental design, 9 schizophrenic and 7 normal subjects participated in a personal traits attribution task regarding the attribution of the self, another person and a simple reading. Electric brain activity was recorded with a dense array of 128 electrodes, with evoked brain potentials being obtained for the three conditions. Considering the evoked potential morphology, repeated measures ANO VA were performed on the adaptive mean for the 180-230 ms time window (P200) in the frontomedial electrodes, with a group effect being found (F=5.352; p=0.038). Comparisons of the groups show that the schizophrenics presented less voltage in the seZ/condition (t=2.386; p=0.033). Although the results are not consistent with the hypothesis, it can be suggested that the early modulation of word-related meaning formation in a self-referential context could be affected in schizophrenia.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.41 n.2 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000200003en10.4067/S0716-97602008000200003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	schizophrenia event related potential self
spellingShingle	schizophrenia event related potential self SILVA,JAIME R TORRES,WALTER M ORTIZ,MANUEL S Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
description	Changes in personal identity have been described as a major component in the expression of schizophrenia. Considering current evidence that relates the cortical structures of the medial line with the self, we hypothesize that there are differences in the frontomedial electrophysiological activation in schizophrenics when compared to normal subjects during tasks that require this function. In an experimental design, 9 schizophrenic and 7 normal subjects participated in a personal traits attribution task regarding the attribution of the self, another person and a simple reading. Electric brain activity was recorded with a dense array of 128 electrodes, with evoked brain potentials being obtained for the three conditions. Considering the evoked potential morphology, repeated measures ANO VA were performed on the adaptive mean for the 180-230 ms time window (P200) in the frontomedial electrodes, with a group effect being found (F=5.352; p=0.038). Comparisons of the groups show that the schizophrenics presented less voltage in the seZ/condition (t=2.386; p=0.033). Although the results are not consistent with the hypothesis, it can be suggested that the early modulation of word-related meaning formation in a self-referential context could be affected in schizophrenia.
author	SILVA,JAIME R TORRES,WALTER M ORTIZ,MANUEL S
author_facet	SILVA,JAIME R TORRES,WALTER M ORTIZ,MANUEL S
author_sort	SILVA,JAIME R
title	Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
title_short	Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
title_full	Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
title_fullStr	Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
title_full_unstemmed	Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task
title_sort	abnormal electrophysiological activation in schizophrenics during a personal traits attribution task
publisher	Sociedad de Biología de Chile
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000200003
work_keys_str_mv	AT silvajaimer abnormalelectrophysiologicalactivationinschizophrenicsduringapersonaltraitsattributiontask AT torreswalterm abnormalelectrophysiologicalactivationinschizophrenicsduringapersonaltraitsattributiontask AT ortizmanuels abnormalelectrophysiologicalactivationinschizophrenicsduringapersonaltraitsattributiontask
_version_	1718441431417225216

Abnormal Electrophysiological Activation in Schizophrenics during a Personal Traits Attribution Task

Ejemplares similares