Impaired Recognition of Emotional Facial ...
Type de document :
Communication dans un congrès avec actes
URL permanente :
Titre :
Impaired Recognition of Emotional Facial Expressions in Dementia
Auteur(s) :
Titre de la manifestation scientifique :
20th World Congress of Psychophysiology (IOP 2021)
Organisateur(s) de la manifestation scientifique :
organisateur iop et University of Electronic Science and Technology of China
Ville :
Chengdu
Pays :
Chine
Date de début de la manifestation scientifique :
2021-09-07
Titre de la revue :
International Journal of Psychophysiology
Nom court de la revue :
International Journal of Psychophysiology
Éditeur :
Elsevier BV
Date de publication :
2021-10
ISSN :
0167-8760
Discipline(s) HAL :
Sciences cognitives
Résumé en anglais : [en]
Emotional Facial Expressions (EFE) recognition is a major marker of emotional abilities. EFE recognition ability decreases with aging and is impaired in patients with mild cognitive impairment (MCI), Alzheimer's disease ...
Lire la suite >Emotional Facial Expressions (EFE) recognition is a major marker of emotional abilities. EFE recognition ability decreases with aging and is impaired in patients with mild cognitive impairment (MCI), Alzheimer's disease (AD) and Parkinson’s disease (PD). The present study aims to explore brain mechanisms related to such impairment through the analysis of evoked potentials (ERPs). Nineteen patients with amnestic mild cognitive impairment (aMCI), 20 AD patients, 13 PD patients with mild cognitive impairment (PD-MCI), 14 PD patients with dementia, 20 healthy elderly (HE) and 18 healthy young (HY) were presented with 5 different EFE (angry, happy, neutral, sad, fearful) from the Ekman's Pictures of Facial Affect. An electroencephalogram (EEG) was recorded and, in order to distinguish evoked components underlying the apparent emotional modulation of ERP differences, a principal component analysis (PCA) over both time and space was applied to the ERPs during an EFE recognition task. Several components were identified, based on their latency and scalp topography, corresponding to the N1, P1, N170, VPP, P2, P3 and LPP. Regardless of EFE, patients with PD-MCI showed reduced N1 compared to HE. Patients with PD showed a reduced N170 to angry faces compared to HE. HE and aMCI patients showed greater VPP than HY. Finally, in response to EFE, aMCI patients showed an enhanced P2 and a decreased P3 compared to HY. To our knowledge, this is the first time that such a comparison of patients with different kinds of dementia is made on the basis of a temporo-spatial PCA of the ERPs. Results suggests a deficit in the processing of unpleasant information in patients with PD and difficulties to process faces, particularly EFE, in patients with aMCI. Results also support a deficit in the allocation of attentional resources toward the stimuli in PD-MCI patients. No significant difference was observed between patients with AD and healthy participants, old or young.Lire moins >
Lire la suite >Emotional Facial Expressions (EFE) recognition is a major marker of emotional abilities. EFE recognition ability decreases with aging and is impaired in patients with mild cognitive impairment (MCI), Alzheimer's disease (AD) and Parkinson’s disease (PD). The present study aims to explore brain mechanisms related to such impairment through the analysis of evoked potentials (ERPs). Nineteen patients with amnestic mild cognitive impairment (aMCI), 20 AD patients, 13 PD patients with mild cognitive impairment (PD-MCI), 14 PD patients with dementia, 20 healthy elderly (HE) and 18 healthy young (HY) were presented with 5 different EFE (angry, happy, neutral, sad, fearful) from the Ekman's Pictures of Facial Affect. An electroencephalogram (EEG) was recorded and, in order to distinguish evoked components underlying the apparent emotional modulation of ERP differences, a principal component analysis (PCA) over both time and space was applied to the ERPs during an EFE recognition task. Several components were identified, based on their latency and scalp topography, corresponding to the N1, P1, N170, VPP, P2, P3 and LPP. Regardless of EFE, patients with PD-MCI showed reduced N1 compared to HE. Patients with PD showed a reduced N170 to angry faces compared to HE. HE and aMCI patients showed greater VPP than HY. Finally, in response to EFE, aMCI patients showed an enhanced P2 and a decreased P3 compared to HY. To our knowledge, this is the first time that such a comparison of patients with different kinds of dementia is made on the basis of a temporo-spatial PCA of the ERPs. Results suggests a deficit in the processing of unpleasant information in patients with PD and difficulties to process faces, particularly EFE, in patients with aMCI. Results also support a deficit in the allocation of attentional resources toward the stimuli in PD-MCI patients. No significant difference was observed between patients with AD and healthy participants, old or young.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Établissement(s) :
Université de Lille
CNRS
CHU Lille
CNRS
CHU Lille
Équipe(s) de recherche :
Équipe Dynamique Émotionnelle et Pathologies (DEEP)
Date de dépôt :
2021-10-12T16:48:14Z
2021-10-13T10:38:40Z
2021-10-15T07:13:47Z
2021-10-13T10:38:40Z
2021-10-15T07:13:47Z