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The Embodied Cognition: Exploratory Study of Automatic and Controlled Processes in Anorexia Nervosa.

9 de março de 2016 atualizado por: Centre Hospitalier Universitaire de Saint Etienne

The Embodied Cognition: Exploratory Study of Automatic and Controlled Processes in Anorexia Nervosa. A Monocentric Study

Anorexia nervosa (AN) is a common psychiatric illness, with severe prognosis (5% mortality) that has changed little over in half a century. One of the forms is the restrictive anorexia nervosa (ANR). It consists of a phobia of weight gain and food with a massive food restriction. This pathology is studied in psychology but not using the theories of embodied cognition in which "perception and action" interact through sensorimotor processes. They are the source of attitudes (unconscious) towards certain stimuli and influence our interpretation (conscious).

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

Descrição detalhada

The investigators hypothesis is that food restriction behavior is the result of two processes. One automatic and not conscious, which is an attraction toward food and manifests itself in the motivational attitudes of approach, and the other controlled and conscious, which prevents attraction to this type of stimuli and is manifested by motivational attitudes avoidance. These processes of attraction and avoidance are observed in embodied cognition paradigms because the answers induce movement of approach or avoidance of stimuli. The validation of these assumptions could lead to reconsideration of the respective roles of automatic and controlled processes in food behaviors of anorexics patients and to complete or refocus psychological techniques of care.

Tipo de estudo

Intervencional

Inscrição (Real)

176

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

  • França
      • Saint-etienne, França, 42000
        • CHU de Saint-Etienne

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 36 anos (Adulto)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Fêmea

Descrição

Inclusion Criteria for patients:

  • Restrictive anorexia nervosa according to Diagnostic and Statistical Manual of Mental Disorders Text Revision (DSM IV-TR)
  • BMI> 16 to avoid the effects of undernutrition
  • Start disorders <10 years
  • Right handed
  • Having given free and informed consent prior to study participation
  • Subject affiliated to the French National Health Insurance

Inclusion Criteria for control group:

  • BMI between 18,5 and 25
  • Right handed
  • Of school level paired in that of the patients (+/-1 the year)
  • Having given free and informed consent prior to study participation
  • Subject affiliated to the French National Health Insurance

Exclusion Criteria for patients and control group:

  • Patients with at the beginning or during the study form of purgative anorexia nervosa
  • Control with disorders of current or past eating behavior.
  • Control making a restrictive diet during the study period
  • Participants with depressive table
  • Participants with a somatic problem restricted movement or a problem of uncorrected visual acuity annoying reading of the screen.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Patients group 1
TEA + Grober Test + Task 1 + Grober Test
Outro: TEA + Grober Test + Task 1 + Grober Test

The Test of Everyday Attention (TEA) measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 1 consists of a stimulus that moves on the screen. The response of the patient is done on the keyboard. It is composed on two conditions: one is fast (without conscious), the other consists in assessing words (conscious). It includes food and non-food words.
Experimental: Patients group 2
TEA + Grober Test + Task 2 + Grober Test
Outro: TEA + Grober Test + Task 2 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 2 consists of a stimulus that is fixed on the screen. The response of the patient is done by pushing or pulling a lever. It is composed on two conditions: one is fast (without conscious), the other consists in assessing words (conscious). It includes food and non-food words.
Experimental: Patients group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Outro: TEA + Grober Test + Implicit Task 3 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 3 is a compilation of tasks 1 and 2 to investigate the bidirectional link. The instructions are implicit condition to detect an A in the word ("yes-no" answer).
Experimental: Patients group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Outro: TEA + Grober Test + Explicit Task 3 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 3 is a compilation of tasks 1 and 2 to investigate the bidirectional link. The instructions are explicit condition to judge the emotional value of words ("positive-negative" answer).
Comparador Ativo: Healthy volonteers group 1
TEA + Grober Test + Task 1 + Grober Test
Outro: TEA + Grober Test + Task 1 + Grober Test

The Test of Everyday Attention (TEA) measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 1 consists of a stimulus that moves on the screen. The response of the patient is done on the keyboard. It is composed on two conditions: one is fast (without conscious), the other consists in assessing words (conscious). It includes food and non-food words.
Comparador Ativo: Healthy volonteers group 2
TEA + Grober Test + Task 2 + Grober Test
Outro: TEA + Grober Test + Task 2 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 2 consists of a stimulus that is fixed on the screen. The response of the patient is done by pushing or pulling a lever. It is composed on two conditions: one is fast (without conscious), the other consists in assessing words (conscious). It includes food and non-food words.
Comparador Ativo: Healthy volonteers group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Outro: TEA + Grober Test + Implicit Task 3 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 3 is a compilation of tasks 1 and 2 to investigate the bidirectional link. The instructions are implicit condition to detect an A in the word ("yes-no" answer).
Comparador Ativo: Healthy volonteers group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Outro: TEA + Grober Test + Explicit Task 3 + Grober Test

The TEA measures the reaction time of the participant during the occurrence of an expected stimulus.

The Grober Test with 16 words to learn and to remember, measures the episodic verbal memory long term.

The Task 3 is a compilation of tasks 1 and 2 to investigate the bidirectional link. The instructions are explicit condition to judge the emotional value of words ("positive-negative" answer).

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Response time (ms) in the different conditions of the three tasks (composite measure)
Prazo: Day 1

Tasks are:

  • tap a key on the computer keyboard during the presentation of food and non-food words containing an "A" on a computer screen
  • pull a lever towards you at the presentation of food and non-food words on a computer screen
  • pull a lever towards you at the presentation of food and non-food words that approach on a computer screen
Day 1

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
BMI in kg/m²
Prazo: Day 1
The Body Mass Index (BMI) is defined as the body mass divided by the square of the body height.
Day 1
Rate of wrong answers
Prazo: Day 1
It is the rate of wrong answers in the different conditions of the three tasks.
Day 1
Score EDI-2
Prazo: Day 1
The Eating Disorder Inventory (EDI) is a self-report questionnaire used to assess the presence of eating disorders.
Day 1
Silhouettes test score
Prazo: Day 1
The patient selects among several silhouettes a silhouette to represent her real body image and her ideal body image.
Day 1

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Centre Hospitalier Universitaire de Saint Etienne

Investigadores

  • Investigador principal: Catherine MASSOUBRE, MD PhD, CHU de Saint-Etienne

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo

1 de maio de 2011

Conclusão Primária (Real)

1 de janeiro de 2016

Conclusão do estudo (Real)

1 de janeiro de 2016

Datas de inscrição no estudo

Enviado pela primeira vez

31 de agosto de 2015

Enviado pela primeira vez que atendeu aos critérios de CQ

1 de setembro de 2015

Primeira postagem (Estimativa)

2 de setembro de 2015

Atualizações de registro de estudo

Última Atualização Postada (Estimativa)

10 de março de 2016

Última atualização enviada que atendeu aos critérios de controle de qualidade

9 de março de 2016

Última verificação

1 de março de 2016

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • 1001179
  • 2010-A01523-36 (Outro identificador: ANSM)

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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