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

9 marzo 2016 aggiornato da: 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).

Panoramica dello studio

Stato

Completato

Condizioni

Intervento / Trattamento

Descrizione dettagliata

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 di studio

Interventistico

Iscrizione (Effettivo)

176

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

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

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 18 anni a 36 anni (Adulto)

Accetta volontari sani

Sì

Sessi ammissibili allo studio

Femmina

Descrizione

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.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Patients group 1
TEA + Grober Test + Task 1 + Grober Test
Altro: 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.
Sperimentale: Patients group 2
TEA + Grober Test + Task 2 + Grober Test
Altro: 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.
Sperimentale: Patients group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Altro: 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).
Sperimentale: Patients group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Altro: 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).
Comparatore attivo: Healthy volonteers group 1
TEA + Grober Test + Task 1 + Grober Test
Altro: 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.
Comparatore attivo: Healthy volonteers group 2
TEA + Grober Test + Task 2 + Grober Test
Altro: 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.
Comparatore attivo: Healthy volonteers group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Altro: 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).
Comparatore attivo: Healthy volonteers group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Altro: 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).

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Response time (ms) in the different conditions of the three tasks (composite measure)
Lasso di tempo: 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

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
BMI in kg/m²
Lasso di tempo: 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
Lasso di tempo: Day 1
It is the rate of wrong answers in the different conditions of the three tasks.
Day 1
Score EDI-2
Lasso di tempo: 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
Lasso di tempo: Day 1
The patient selects among several silhouettes a silhouette to represent her real body image and her ideal body image.
Day 1

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Centre Hospitalier Universitaire de Saint Etienne

Investigatori

  • Investigatore principale: Catherine MASSOUBRE, MD PhD, Chu de Saint-Etienne

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 maggio 2011

Completamento primario (Effettivo)

1 gennaio 2016

Completamento dello studio (Effettivo)

1 gennaio 2016

Date di iscrizione allo studio

Primo inviato

31 agosto 2015

Primo inviato che soddisfa i criteri di controllo qualità

1 settembre 2015

Primo Inserito (Stima)

2 settembre 2015

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Stima)

10 marzo 2016

Ultimo aggiornamento inviato che soddisfa i criteri QC

9 marzo 2016

Ultimo verificato

1 marzo 2016

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • 1001179
  • 2010-A01523-36 (Altro identificatore: ANSM)

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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