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1.
Psychiatry Res ; 186(2-3): 281-6, 2011 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-20667418

RESUMO

Research suggests that depressive individuals exhibit disturbances in the evaluation of emotional facial expressions. Owing to the specific character of postnatal depressive mood, the purpose of the present study was to examine whether postpartum depressive mood intensity in the mothers would involve the same disturbances as depression or a specific distortion in the emotional evaluation of baby faces as compared to adult faces. Three days after birth, the participants (N=79) completed the Edinburgh Postnatal Depression Scale, the State-Trait Anxiety Inventory and the Toronto Alexithymia Scale. They also evaluated the facial expressions of adults and babies displaying anger, happiness, sadness and neutrality in terms of the intensity of five emotions: Anger, disgust, sadness, happiness and neutrality. Our findings suggest that judgements of emotional facial expressions depend to a great extent on anxiety, which specifically increased negative perception of babies' emotions. Moreover, the only difference between mothers with and without postpartum depressive mood lays in their assessment of the babies' faces, neutral baby faces being judged to be less neutral, thus demonstrating the specificity of postpartum affective disorders.


Assuntos
Depressão Pós-Parto/fisiopatologia , Emoções/fisiologia , Expressão Facial , Reconhecimento Visual de Modelos/fisiologia , Adulto , Feminino , Humanos , Estimulação Luminosa/métodos , Escalas de Graduação Psiquiátrica , Estatística como Assunto
2.
J Autism Dev Disord ; 38(7): 1320-7, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18297387

RESUMO

Parents report that their children with autism are often judged as undisciplined and rude (e.g., Peeters, Autism: From theoretical understanding to educational intervention, 1997). The phenomenon of a negative view of individuals with autism was studied here. Four behaviors (two problematic and two non-problematic) produced by a six-year-old child with autism were assessed on social, emotional, and cognitive dimensions by 88 adults in an "informed" or "uninformed" condition. The child was perceived more positively when identified as having autism. However, this effect was dependent on the type of behavior and the evaluative dimension used. The results indicate that the mere fact of being informed of a child's disability triggers the use of a different standard of comparison than that employed to evaluate typical children (Mussweiler and Strack, J Pers Soc Psychol 78:1038-1052, 2000).


Assuntos
Transtorno Autístico/psicologia , Transtornos do Comportamento Infantil/psicologia , Opinião Pública , Adaptação Psicológica , Adolescente , Adulto , Idoso , Transtorno Autístico/diagnóstico , Transtornos do Comportamento Infantil/diagnóstico , Feminino , Educação em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Poder Familiar/psicologia , Adulto Jovem
3.
BMJ Open ; 5(2): e007716, 2015 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-25710916

RESUMO

INTRODUCTION: Individuals with autism spectrum disorder (ASD) have difficulties in communication and social interaction resulting from atypical perceptual and cognitive information processing, leading to an accumulation of anxiety. Extreme overloading experienced internally may not be externally visible. Identifying stressful situations at an early stage may avoid socially problematic behaviour from occurring, such as self-injurious behaviour. Activation of the autonomous nervous system (ANS) is involved in the response to anxiety, which can be measured through heart rate variability and skin conductance with the use of portable devices, non-intrusively and pain-free. Thus, developing innovative analysis of signal perception and reaction is necessary, mainly for non-communicative individuals with autism. METHODS AND ANALYSIS: The protocol will take place in real life (home and social environments). We aim to associate modifications of the ANS with external events that will be recorded in a synchronous manner through a specific design (spy glasses with video/audio recording). Four phases will be carried out on ASD participants and aged-matched controls: (1) 24-hour baseline pre-experiment (physical activity, sleep), (2) 2 h in a real life situation, (3) 30 min in a quiet environment, interrupted by a few seconds of stressful sound, (4) an interview to record feelings about events triggering anxiety. ASD and control participants will be together for phases 2 and 3, revealing different physiological responses to the same situations, and thus identifying potentially problematic events. The novelty will be to apply time-series analyses (which led to several Nobel Prizes in quantitative finance) on ANS series (heart rate, heart rate variability, skin conductance) and wrist motion. ETHICS AND DISSEMINATION: Ethical approval has been obtained from Ethics Committee of Clermont-Ferrand (South-East I), France (2014-A00611-46). Trial findings will be disseminated via open-access peer-reviewed publications, conferences, clinical networks, public lectures and our websites. TRIAL REGISTRATION NUMBER: ClinicalTrials identifier NCT02275455.


Assuntos
Ansiedade/psicologia , Transtorno Autístico/psicologia , Terapia Cognitivo-Comportamental , Comportamento Autodestrutivo/prevenção & controle , Adaptação Psicológica , Ansiedade/fisiopatologia , Ansiedade/terapia , Transtorno Autístico/fisiopatologia , Transtorno Autístico/terapia , Protocolos Clínicos , Comunicação , Humanos , Relações Interpessoais , Satisfação Pessoal , Comportamento Social , Meio Social , Estresse Psicológico , Resultado do Tratamento
4.
J Pers Soc Psychol ; 86(1): 5-18, 2004 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-14717625

RESUMO

Past research has yielded contradictory results with regard to the relationship between expertise and evaluative extremity. The authors suggest that this apparent contradiction is due to the task characteristics of the expert activity. The primary task of certain experts is to formulate overall (configural) judgments and to generate clear, unambiguous answers. These experts tend to give relatively extreme evaluations. Other experts generally communicate the implications of the different choice alternatives and explain featural aspects of the stimuli. These experts are characterized by relatively moderate evaluations. The research reported in this article shows that experts whose expert activity involves configural judgments tend to make more extreme evaluations than experts who generally provide others with featural explanations. It also demonstrates that experts' task characteristics affect the way they store stimulus-relevant attributes in memory.


Assuntos
Prova Pericial , Memória , Adulto , Feminino , Humanos , Masculino , Projetos Piloto , Inquéritos e Questionários
5.
Can J Exp Psychol ; 56(4): 263-72, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12491650

RESUMO

The main objective of the presented study was to study feeling-of-knowing (FOK) in proper name retrieval. Many studies show that FOK can predict performance on a subsequent criterion test. Although feeling-of-knowing studies involve questions about proper names, none make this distinction between proper names and common names. Nevertheless, the specific character of proper names as a unique label referring to a person should allow participants to target precisely the desired verbal label. Our idea here was that the unique character of proper name information should result in more accurate FOK evaluations. In the experiment, participants evaluated feeling-of-knowing for proper and common name descriptions. The study demonstrates that FOK judgments are more accurate for proper names than for common names. The implications of the findings for proper names are briefly discussed in terms of feeling-of-knowing hypotheses.


Assuntos
Cognição , Nomes , Adulto , Sinais (Psicologia) , Humanos , Memória , Rememoração Mental
6.
J Parkinsons Dis ; 4(1): 97-110, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24496100

RESUMO

BACKGROUND: Deep brain stimulation of the subthalamic nuclei (STN-DBS) is an effective treatment for the most severe forms of Parkinson's disease (PD) and is intended to suppress these patients' motor symptoms. However, be it in association with Dopamine Replacement Therapy (DRT) or not, STN-DBS may in some cases induce addictive or emotional disorders. OBJECTIVE: In the current study, we suggest that PD patients suffer from emotional deficits that have not been revealed in previous studies because in those experiments the stimuli were displayed for a time long enough to allow patients to have recourse to perceptual strategies in order to recognize the emotional facial expressions (EFE). METHODS: The aim of the current article is to demonstrate the existence of emotional disorders in PD by using a rapid presentation of the visual stimuli (200-ms display time) which curtails their perceptual analysis, and to determine whether STN-DBS, either associated or not associated with DRT, has an impact on the recognition of emotions. RESULTS: The results show that EFE recognition performance depends on both STN-DBS ('on' vs. 'off') and medication ('on' vs. 'off'), but also that these variables have an interactive influence on EFE recognition performance. Moreover, we also reveal how these EFE impairments depend on different spatial frequencies perceptual channels (related to different cortical vs. subcortical neural structures). CONCLUSIONS: The effect of PD without therapy seems to be particularly acute for LSF emotional faces, possibly due to a subcortical dysfunction. However, our results indicate that the joint action of STN-DBS and DRT could also disrupt recognition of emotional expressions at the level of occipito-temporal cortical areas (processing HSF visual information) inducing broad global impairment of EFE at the level of HSF visual channels.


Assuntos
Antiparkinsonianos/efeitos adversos , Estimulação Encefálica Profunda/efeitos adversos , Emoções/fisiologia , Levodopa/efeitos adversos , Doença de Parkinson/fisiopatologia , Doença de Parkinson/terapia , Afeto/fisiologia , Idoso , Terapia Combinada , Expressão Facial , Humanos , Pessoa de Meia-Idade , Doença de Parkinson/tratamento farmacológico , Núcleo Subtalâmico/cirurgia
7.
Front Hum Neurosci ; 7: 149, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23630481

RESUMO

OBJECTIVE: Based on a variety of empirical evidence obtained within the theoretical framework of embodiment theory, we considered it likely that motor disorders in Tourette's syndrome (TS) would have emotional consequences for TS patients. However, previous research using emotional facial categorization tasks suggests that these consequences are limited to TS patients with obsessive-compulsive behaviors (OCB). METHOD: These studies used long stimulus presentations which allowed the participants to categorize the different emotional facial expressions (EFEs) on the basis of a perceptual analysis that might potentially hide a lack of emotional feeling for certain emotions. In order to reduce this perceptual bias, we used a rapid visual presentation procedure. RESULTS: Using this new experimental method, we revealed different and surprising impairments on several EFEs in TS patients compared to matched healthy control participants. Moreover, a spatial frequency analysis of the visual signal processed by the patients suggests that these impairments may be located at a cortical level. CONCLUSION: The current study indicates that the rapid visual presentation paradigm makes it possible to identify various potential emotional disorders that were not revealed by the standard visual presentation procedures previously reported in the literature. Moreover, the spatial frequency analysis performed in our study suggests that emotional deficit in TS might lie at the level of temporal cortical areas dedicated to the processing of HSF visual information.

9.
PLoS One ; 7(11): e49116, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23185299

RESUMO

The aim of the present study was to investigate whether children with Autism Spectrum Disorders (ASD) have a deficit in time perception. Twelve ASD children of normal intelligence and twelve typically developing children (TD) - matched on sex, chronological age, and mental age - performed four temporal bisection tasks that were adapted to the population. Two short (0.5 to 1 s and 1.25 to 2.5 s) and two long duration ranges (3.12 to 6.25 s and 7.81 to 16.62 s) were thus examined. The findings suggested that the perception of time in bisection is not impaired in ASD.


Assuntos
Transtornos Globais do Desenvolvimento Infantil/fisiopatologia , Percepção do Tempo/fisiologia , Adolescente , Criança , Humanos , Masculino , Testes Neuropsicológicos
10.
Neuropsychologia ; 50(12): 2869-2879, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22944002

RESUMO

Deep brain stimulation of the subthalamic nucleus (DBS) is a widely used surgical technique to suppress motor symptoms in Parkinson's disease (PD), and as such improves patients' quality of life. However, DBS may produce emotional disorders such as a reduced ability to recognize emotional facial expressions (EFE). Previous studies have not considered the fact that DBS and l-dopa medication can have differential, common, or complementary consequences on EFE processing. A thorough way of investigating the effect of DBS and l-dopa medication in greater detail is to compare patients' performances after surgery, with the two therapies either being administered ('on') or not administered ('off'). We therefore used a four-condition (l-dopa 'on'/DBS 'on', l-dopa 'on'/DBS 'off', l-dopa 'off'/DBS 'on', and l-dopa 'off'/DBS 'off') EFE recognition paradigm and compared implanted PD patients to healthy controls. The results confirmed those of previous studies, yielding a significant impairment in the detection of some facial expressions relative to controls. Disgust recognition was impaired when patients were 'off' l-dopa and 'on' DBS, and fear recognition impaired when 'off' of both therapies. More interestingly, the combined effect of both DBS and l-dopa administration seems much more beneficial for EFE recognition than the separate administration of each individual therapy. We discuss the implications of these findings in the light of the inverted U curve function that describes the differential effects of dopamine level on the right orbitofrontal cortex (OFC). We propose that, while l-dopa could "overdose" in dopamine the ventral stream of the OFC, DBS would compensate for this over-activation by decreasing OFC activity, thereby restoring the necessary OFC-amygdala interaction. Another finding is that, when collapsing over all treatment conditions, PD patients recognized more neutral faces than the matched controls, a result that concurs with embodiment theories.


Assuntos
Antiparkinsonianos/uso terapêutico , Estimulação Encefálica Profunda/psicologia , Levodopa/uso terapêutico , Doença de Parkinson/terapia , Reconhecimento Visual de Modelos/efeitos dos fármacos , Transtornos da Percepção/tratamento farmacológico , Núcleo Subtalâmico/efeitos dos fármacos , Idoso , Terapia Combinada , Emoções , Expressão Facial , Feminino , Lobo Frontal/efeitos dos fármacos , Lobo Frontal/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Doença de Parkinson/complicações , Doença de Parkinson/psicologia , Transtornos da Percepção/etiologia , Núcleo Subtalâmico/fisiopatologia
11.
Contemp Educ Psychol ; 26(4): 507-533, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11681830

RESUMO

A previous study showed that pairs of students interacting in a second language produced more words when they were assigned a fictitious expert position in a specific competence dimension than when they were assigned a nonexpert position. It has also been shown that the usual level of expertise has an impact on the assigned fictitious expertise effect. The present study was designed to determine whether the processing capacity allotted to the current task could partly determine performance. A given position of expertise may demand a large or small attentional capacity. Two experiments were conducted using a dual-task paradigm. As expected, the different expertise positions led to different reaction times on the secondary task. The second experiment showed that the impact of assigning a position of expertise to students depends on their usual academic standing. This study supports the idea that in interactive situations, performance variations as a function of the expertise position can be partially explained by differences in the processing resources allocated to the task. Implications for teaching are discussed. Copyright 2001 Academic Press.

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