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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

176 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-05-31

Study Completion Date

2016-01-31

Brief Summary

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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).

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Detailed Description

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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.

Conditions

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Anorexia Nervosa

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

NONE

Study Groups

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Patients group 1

TEA + Grober Test + Task 1 + Grober Test

Group Type EXPERIMENTAL

TEA + Grober Test + Task 1 + Grober Test

Intervention Type OTHER

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.

Patients group 2

TEA + Grober Test + Task 2 + Grober Test

Group Type EXPERIMENTAL

TEA + Grober Test + Task 2 + Grober Test

Intervention Type OTHER

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.

Patients group 3

TEA + Grober Test + Implicit Task 3 + Grober Test

Group Type EXPERIMENTAL

TEA + Grober Test + Implicit Task 3 + Grober Test

Intervention Type OTHER

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).

Patients group 4

TEA + Grober Test + Explicit Task 3 + Grober Test

Group Type EXPERIMENTAL

TEA + Grober Test + Explicit Task 3 + Grober Test

Intervention Type OTHER

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).

Healthy volonteers group 1

TEA + Grober Test + Task 1 + Grober Test

Group Type ACTIVE_COMPARATOR

TEA + Grober Test + Task 1 + Grober Test

Intervention Type OTHER

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.

Healthy volonteers group 2

TEA + Grober Test + Task 2 + Grober Test

Group Type ACTIVE_COMPARATOR

TEA + Grober Test + Task 2 + Grober Test

Intervention Type OTHER

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.

Healthy volonteers group 3

TEA + Grober Test + Implicit Task 3 + Grober Test

Group Type ACTIVE_COMPARATOR

TEA + Grober Test + Implicit Task 3 + Grober Test

Intervention Type OTHER

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).

Healthy volonteers group 4

TEA + Grober Test + Explicit Task 3 + Grober Test

Group Type ACTIVE_COMPARATOR

TEA + Grober Test + Explicit Task 3 + Grober Test

Intervention Type OTHER

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).

Interventions

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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.

Intervention Type OTHER

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.

Intervention Type OTHER

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).

Intervention Type OTHER

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).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 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

* 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

* 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.

Minimum Eligible Age

18 Years

Maximum Eligible Age

36 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes