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

9 mars 2016 uppdaterad av: 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).

Studieöversikt

Status

Avslutad

Betingelser

Intervention / Behandling

Detaljerad beskrivning

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.

Studietyp

Interventionell

Inskrivning (Faktisk)

176

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

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

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år till 36 år (Vuxen)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Kvinna

Beskrivning

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.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Patients group 1
TEA + Grober Test + Task 1 + Grober Test
Övrig: 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.
Experimentell: Patients group 2
TEA + Grober Test + Task 2 + Grober Test
Övrig: 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.
Experimentell: Patients group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Övrig: 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).
Experimentell: Patients group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Övrig: 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).
Aktiv komparator: Healthy volonteers group 1
TEA + Grober Test + Task 1 + Grober Test
Övrig: 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.
Aktiv komparator: Healthy volonteers group 2
TEA + Grober Test + Task 2 + Grober Test
Övrig: 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.
Aktiv komparator: Healthy volonteers group 3
TEA + Grober Test + Implicit Task 3 + Grober Test
Övrig: 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).
Aktiv komparator: Healthy volonteers group 4
TEA + Grober Test + Explicit Task 3 + Grober Test
Övrig: 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).

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Response time (ms) in the different conditions of the three tasks (composite measure)
Tidsram: 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

Sekundära resultatmått

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

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Centre Hospitalier Universitaire de Saint Etienne

Utredare

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

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 maj 2011

Primärt slutförande (Faktisk)

1 januari 2016

Avslutad studie (Faktisk)

1 januari 2016

Studieregistreringsdatum

Först inskickad

31 augusti 2015

Först inskickad som uppfyllde QC-kriterierna

1 september 2015

Första postat (Uppskatta)

2 september 2015

Uppdateringar av studier

Senaste uppdatering publicerad (Uppskatta)

10 mars 2016

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

9 mars 2016

Senast verifierad

1 mars 2016

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 1001179
  • 2010-A01523-36 (Annan identifierare: ANSM)

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

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