MovDisordV3, PascalFrancis, Corpus, bibRecord, 001021

Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study

Identifieur interne : 001021 ( PascalFrancis/Corpus ); précédent : 001020; suivant : 001022

Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study

Auteurs : Blanca Ramirez-Ruiz ; Maria-José Marti ; Eduardo Tolosa ; Carlos Falcon ; Nuria Bargallo ; Francesc Valldeoriola ; Carme Junque

Source :

Movement disorders [ 0885-3185 ] ; 2008.

RBID : Pascal:09-0058923

Descripteurs français

Pascal (Inist)
- Hallucination visuelle, Maladie de Parkinson, Pathologie du système nerveux, Encéphale, Homme, Imagerie fonctionnelle, Imagerie RMN, Attention, Face, Cortex préfrontal.

English descriptors

KwdEn :
- Attention, Encephalon, Face, Functional imaging, Human, Nervous system diseases, Nuclear magnetic resonance imaging, Parkinson disease, Prefrontal cortex, Visual hallucination.

Abstract

Visual hallucinations (VH) in Parkinson's disease (PD) have been associated with gray matter reductions in visual associative areas and with abnormal patterns of brain activation in posterior and frontal regions. However, all previous fMRI studies have used simple visual stimuli. The objective of our study was, therefore, to compare the pattern of brain activation during a one-back face detection task. We examined 10 PD patients with VH, 10 PD patients without VH, and 10 controls matched for age and education. The fMRI task consisted in three blocks of 21-face stimuli (activation condition) and three blocks of 21-colored mosaics (control condition). Subjects were asked to press a key when two identical stimuli were presented consecutively. During the face condition, compared with patients without VH, hallucinating PD patients showed significant reductions in the activation of several right prefrontal areas, such as the inferior (BA 10,47), superior (BA 6/8), middle frontal (BA 8), and anterior cingulate gyrus (BA 31/32). In the control condition, we found a hyperactivation in the hallucinating PD sample compared with the nonVH patients in the right inferior frontal gyrus. A dysfunction of the frontal areas associated with the control of attention could predispose to VH through an abnormal processing of relevant and irrelevant visual stimuli.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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C01	`01`		`ENG`	@0 Visual hallucinations (VH) in Parkinson's disease (PD) have been associated with gray matter reductions in visual associative areas and with abnormal patterns of brain activation in posterior and frontal regions. However, all previous fMRI studies have used simple visual stimuli. The objective of our study was, therefore, to compare the pattern of brain activation during a one-back face detection task. We examined 10 PD patients with VH, 10 PD patients without VH, and 10 controls matched for age and education. The fMRI task consisted in three blocks of 21-face stimuli (activation condition) and three blocks of 21-colored mosaics (control condition). Subjects were asked to press a key when two identical stimuli were presented consecutively. During the face condition, compared with patients without VH, hallucinating PD patients showed significant reductions in the activation of several right prefrontal areas, such as the inferior (BA 10,47), superior (BA 6/8), middle frontal (BA 8), and anterior cingulate gyrus (BA 31/32). In the control condition, we found a hyperactivation in the hallucinating PD sample compared with the nonVH patients in the right inferior frontal gyrus. A dysfunction of the frontal areas associated with the control of attention could predispose to VH through an abnormal processing of relevant and irrelevant visual stimuli.
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C02	`02`	`X`		`@0 002B24A06`
C03	`01`	`X`	`FRE`	`@0 Hallucination visuelle @2 NM @5 01`
C03	`01`	`X`	`ENG`	`@0 Visual hallucination @2 NM @5 01`
C03	`01`	`X`	`SPA`	`@0 Alucinación visual @2 NM @5 01`
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C03	`04`	`X`	`SPA`	`@0 Encéfalo @5 09`
C03	`05`	`X`	`FRE`	`@0 Homme @5 10`
C03	`05`	`X`	`ENG`	`@0 Human @5 10`
C03	`05`	`X`	`SPA`	`@0 Hombre @5 10`
C03	`06`	`X`	`FRE`	`@0 Imagerie fonctionnelle @5 11`
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C03	`06`	`X`	`SPA`	`@0 Imaginería funcional @5 11`
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C03	`07`	`X`	`ENG`	`@0 Nuclear magnetic resonance imaging @5 12`
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C03	`08`	`X`	`FRE`	`@0 Attention @5 13`
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C03	`09`	`X`	`FRE`	`@0 Face @5 14`
C03	`09`	`X`	`ENG`	`@0 Face @5 14`
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C03	`10`	`X`	`FRE`	`@0 Cortex préfrontal @5 15`
C03	`10`	`X`	`ENG`	`@0 Prefrontal cortex @5 15`
C03	`10`	`X`	`SPA`	`@0 Corteza prefrontal @5 15`
C07	`01`	`X`	`FRE`	`@0 Système nerveux central @5 37`
C07	`01`	`X`	`ENG`	`@0 Central nervous system @5 37`
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C07	`02`	`X`	`SPA`	`@0 Encéfalo patología @5 38`
C07	`03`	`X`	`FRE`	`@0 Syndrome extrapyramidal @5 39`
C07	`03`	`X`	`ENG`	`@0 Extrapyramidal syndrome @5 39`
C07	`03`	`X`	`SPA`	`@0 Extrapiramidal síndrome @5 39`
C07	`04`	`X`	`FRE`	`@0 Maladie dégénérative @5 40`
C07	`04`	`X`	`ENG`	`@0 Degenerative disease @5 40`
C07	`04`	`X`	`SPA`	`@0 Enfermedad degenerativa @5 40`
C07	`05`	`X`	`FRE`	`@0 Pathologie du système nerveux central @5 41`
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Format Inist (serveur)

NO :	PASCAL 09-0058923 INIST
ET :	Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study
AU :	RAMIREZ-RUIZ (Blanca); MARTI (Maria-José); TOLOSA (Eduardo); FALCON (Carlos); BARGALLO (Nuria); VALLDEORIOLA (Francesc); JUNQUE (Carme)
AF :	Department of Psychiatry and Clinical Psychohiology, University of Barcelona/Barcelona/Espagne (1 aut., 7 aut.); Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)/Barcelona/Espagne (1 aut., 2 aut., 3 aut., 4 aut., 6 aut., 7 aut.); Parkinson's Disease and Movement Disorders Unit, Neurology Service, Institut Clinic de Neurociències, Hospital Clinic de Barcelona/Barcelona/Espagne (2 aut., 3 aut., 6 aut.); Centro de investigacion en red sobre enfermedades neurodegenerativas (CIBERNED)/Espagne (2 aut., 6 aut., 7 aut.); CIBER. BBN/Barcelona/Espagne (4 aut.); Radiology Department, Centre de Diagnòstic per la Imatge (CDI), Hospital Clinic de Barcelona/Barcelona/Espagne (5 aut.)
DT :	Publication en série; Niveau analytique
SO :	Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2008; Vol. 23; No. 16; Pp. 2335-2343; Bibl. 41 ref.
LA :	Anglais
EA :	Visual hallucinations (VH) in Parkinson's disease (PD) have been associated with gray matter reductions in visual associative areas and with abnormal patterns of brain activation in posterior and frontal regions. However, all previous fMRI studies have used simple visual stimuli. The objective of our study was, therefore, to compare the pattern of brain activation during a one-back face detection task. We examined 10 PD patients with VH, 10 PD patients without VH, and 10 controls matched for age and education. The fMRI task consisted in three blocks of 21-face stimuli (activation condition) and three blocks of 21-colored mosaics (control condition). Subjects were asked to press a key when two identical stimuli were presented consecutively. During the face condition, compared with patients without VH, hallucinating PD patients showed significant reductions in the activation of several right prefrontal areas, such as the inferior (BA 10,47), superior (BA 6/8), middle frontal (BA 8), and anterior cingulate gyrus (BA 31/32). In the control condition, we found a hyperactivation in the hallucinating PD sample compared with the nonVH patients in the right inferior frontal gyrus. A dysfunction of the frontal areas associated with the control of attention could predispose to VH through an abnormal processing of relevant and irrelevant visual stimuli.
CC :	002B17; 002B24A06
FD :	Hallucination visuelle; Maladie de Parkinson; Pathologie du système nerveux; Encéphale; Homme; Imagerie fonctionnelle; Imagerie RMN; Attention; Face; Cortex préfrontal
FG :	Système nerveux central; Pathologie de l'encéphale; Syndrome extrapyramidal; Maladie dégénérative; Pathologie du système nerveux central
ED :	Visual hallucination; Parkinson disease; Nervous system diseases; Encephalon; Human; Functional imaging; Nuclear magnetic resonance imaging; Attention; Face; Prefrontal cortex
EG :	Central nervous system; Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease
SD :	Alucinación visual; Parkinson enfermedad; Sistema nervioso patología; Encéfalo; Hombre; Imaginería funcional; Imaginería RMN; Atención; Cara; Corteza prefrontal
LO :	INIST-20953.354000196116650070
ID :	09-0058923

Links to Exploration step

Pascal:09-0058923

Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study</title>
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<front><div type="abstract" xml:lang="en">Visual hallucinations (VH) in Parkinson's disease (PD) have been associated with gray matter reductions in visual associative areas and with abnormal patterns of brain activation in posterior and frontal regions. However, all previous fMRI studies have used simple visual stimuli. The objective of our study was, therefore, to compare the pattern of brain activation during a one-back face detection task. We examined 10 PD patients with VH, 10 PD patients without VH, and 10 controls matched for age and education. The fMRI task consisted in three blocks of 21-face stimuli (activation condition) and three blocks of 21-colored mosaics (control condition). Subjects were asked to press a key when two identical stimuli were presented consecutively. During the face condition, compared with patients without VH, hallucinating PD patients showed significant reductions in the activation of several right prefrontal areas, such as the inferior (BA 10,47), superior (BA 6/8), middle frontal (BA 8), and anterior cingulate gyrus (BA 31/32). In the control condition, we found a hyperactivation in the hallucinating PD sample compared with the nonVH patients in the right inferior frontal gyrus. A dysfunction of the frontal areas associated with the control of attention could predispose to VH through an abnormal processing of relevant and irrelevant visual stimuli.</div>
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<ET>Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study</ET>
<AU>RAMIREZ-RUIZ (Blanca); MARTI (Maria-José); TOLOSA (Eduardo); FALCON (Carlos); BARGALLO (Nuria); VALLDEORIOLA (Francesc); JUNQUE (Carme)</AU>
<AF>Department of Psychiatry and Clinical Psychohiology, University of Barcelona/Barcelona/Espagne (1 aut., 7 aut.); Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)/Barcelona/Espagne (1 aut., 2 aut., 3 aut., 4 aut., 6 aut., 7 aut.); Parkinson's Disease and Movement Disorders Unit, Neurology Service, Institut Clinic de Neurociències, Hospital Clinic de Barcelona/Barcelona/Espagne (2 aut., 3 aut., 6 aut.); Centro de investigacion en red sobre enfermedades neurodegenerativas (CIBERNED)/Espagne (2 aut., 6 aut., 7 aut.); CIBER. BBN/Barcelona/Espagne (4 aut.); Radiology Department, Centre de Diagnòstic per la Imatge (CDI), Hospital Clinic de Barcelona/Barcelona/Espagne (5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2008; Vol. 23; No. 16; Pp. 2335-2343; Bibl. 41 ref.</SO>
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<EA>Visual hallucinations (VH) in Parkinson's disease (PD) have been associated with gray matter reductions in visual associative areas and with abnormal patterns of brain activation in posterior and frontal regions. However, all previous fMRI studies have used simple visual stimuli. The objective of our study was, therefore, to compare the pattern of brain activation during a one-back face detection task. We examined 10 PD patients with VH, 10 PD patients without VH, and 10 controls matched for age and education. The fMRI task consisted in three blocks of 21-face stimuli (activation condition) and three blocks of 21-colored mosaics (control condition). Subjects were asked to press a key when two identical stimuli were presented consecutively. During the face condition, compared with patients without VH, hallucinating PD patients showed significant reductions in the activation of several right prefrontal areas, such as the inferior (BA 10,47), superior (BA 6/8), middle frontal (BA 8), and anterior cingulate gyrus (BA 31/32). In the control condition, we found a hyperactivation in the hallucinating PD sample compared with the nonVH patients in the right inferior frontal gyrus. A dysfunction of the frontal areas associated with the control of attention could predispose to VH through an abnormal processing of relevant and irrelevant visual stimuli.</EA>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study

Brain Response to Complex Visual Stimuli in Parkinson's Patients with Hallucinations : A Functional Magnetic Resonance Imaging Study

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