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

9 de marzo de 2016 actualizado 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).

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

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 estudio

Intervencionista

Inscripción (Actual)

176

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

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

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años a 36 años (Adulto)

Acepta Voluntarios Saludables

Sí

Géneros elegibles para el estudio

Femenino

Descripción

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.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Patients group 1
TEA + Grober Test + Task 1 + Grober Test
Otro: 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
Otro: 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
Otro: 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
Otro: 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 activo: Healthy volonteers group 1
TEA + Grober Test + Task 1 + Grober Test
Otro: 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 activo: Healthy volonteers group 2
TEA + Grober Test + Task 2 + Grober Test
Otro: 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 activo: Healthy volonteers group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Otro: 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 activo: Healthy volonteers group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Otro: 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).

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Response time (ms) in the different conditions of the three tasks (composite measure)
Periodo de tiempo: 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 resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
BMI in kg/m²
Periodo de tiempo: 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
Periodo de tiempo: Day 1
It is the rate of wrong answers in the different conditions of the three tasks.
Day 1
Score EDI-2
Periodo de tiempo: 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
Periodo de tiempo: 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

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Centre Hospitalier Universitaire de Saint Etienne

Investigadores

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

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de mayo de 2011

Finalización primaria (Actual)

1 de enero de 2016

Finalización del estudio (Actual)

1 de enero de 2016

Fechas de registro del estudio

Enviado por primera vez

31 de agosto de 2015

Primero enviado que cumplió con los criterios de control de calidad

1 de septiembre de 2015

Publicado por primera vez (Estimar)

2 de septiembre de 2015

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

10 de marzo de 2016

Última actualización enviada que cumplió con los criterios de control de calidad

9 de marzo de 2016

Última verificación

1 de marzo de 2016

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

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

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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