Attentional Bias Modification in Fibromyalgia Patients (ABM)

Universidad Rey Juan Carlos40 enrolled

Overview

There is a growing interest in the potential benefits of attentional bias modification (ABM) training in chronic pain patients. However, studies examining the effectiveness of ABM programs in fibromyalgia patients have demonstrated inconclusive effects on both behavioral indices and clinical symptoms. Underlying neural dynamics of ABM effects could yield additional insights but remain yet unexplored. Current study, therefore, aimed investigating the effects of ABM training on known neural indicators of attentional bias to pain using electroencephalography (EEG). The goal of this clinical trial is to test the effects of ABM training on known neural indicators of attentional bias to pain using electroencephalography (EEG) in fibromyalgia patients The main question\[s\] it aims to answer are: * Are fibromyalgia patients sensitive to ABM procedures? * What are the neural indices associated with ABM procedures? * Do ABM procedures transfer of effects on the clinical symptomatology in fibromyalgia patients? Participants will performes five sessions consisting of a modified dot-probe task in which patients were trained to avoid facial pain expressions, whereas in the control group participants will performes five sessions consisting of a standard dot-probe task. Potential ABM training effects will be evaluated by comparing a single pre- and post-treatment session, in which event-related potentials (ERPs) will be recorded in response to three experimental tasks (standard dot-probe, RIR, and visual tasks). Furthermore, patients will fill a series of self-report questionnaires assessing anxiety, depression, pain-related worrying, fear of pain, fatigue and pain status. Researchers will compare two fibromyalgia patients groups that will enrolled and randomly assigned to an ABM training in order to see attentional improvements in the training fibromyalgia group.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

DOUBLE

Enrollment

Eligibility

Sex: FEMALEMin age: 18 YearsMax age: 65 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Fibromyalgia Diagnosis. * Female sex * The presence of clinical symptoms regarding anxiety or depression will be not exclusion criteria, as long as fibromyalgia was participants' primary diagnosis. Exclusion Criteria: * Participation in the study will require the absence of neurological and psychiatric disorders that impair cognitive functions (i.e., stroke brain damage, psychosis, bipolar disorder, and substance abuse/dependence). * Pregnancy * Not being able to read Spanish in order to fill in the questionnaires

Outcomes

Primary Outcomes

Attentional bias from baseline (pre-training)

Attentional bias will be assessed by dot-probe task. Behavioural reaction times outcomes will be recorder. The reaction time average for each dot-probe condition will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Behavioural Attentional bias from baseline (pre-training)

Attentional bias from baseline (pre-training)

Attentional bias will be assessed by dot-probe task. Event-related potentials (ERPs) outcomes will be recorder. The P2 and N2 ERPs average amplitudes for each dot-probe condition will be included as intrasubject factor and the training group as between-subject factor.

Time frame: ERPs Attentional bias from baseline (pre-training)

Changes on Attentional bias from baseline (pre-training) to 1 day post-training

Attentional bias will be assessed by dot-probe task. Behavioural reaction times outcomes will be recorder. To test the effect of the ABM procedure, the reaction time average for each dot-probe condition will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Behavioural attentional bias modification changes from baseline (pre-training vs 1 day post-training)

Changes on Attentional bias from baseline (pre-training) to 1 day post-training

Attentional bias will be assessed by dot-probe task. ERPs outcomes will be recorder. To test the effect of the ABM procedure, ERPs amplitudes for each dot-probe condition will be included as intrasubject factor and the training group as between-subject factor.

Time frame: ERPs attentional bias modification changes from baseline (pre-training vs 1 day post-training)

Secondary Outcomes

Anxiety scores from baseline (pre-training) to 1 day post-training

Anxiety will be assessed by the Spanish version of the State-Trait Anxiety Inventory (STAI) questionnaire. The scale include 20 items and are scored using a four-point Likert scale, ranging from 0 to 3. Higher scores (i.e., \> 60 percentile) represents high anxiety levels. Anxiety scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Anxiety scores from baseline changes from baseline (pre-training vs 1 day post-training)

Depression scores from baseline (pre-training) to 1 day post-training

Depression will be assessed by the Spanish version of the Beck Depression Inventory (BDI). The scale include 21 items with four different statements describing various degrees of symptom intensity. Higher scores (i.e., \> 21) represents greater severity of depressive symptoms. Depression scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Depression scores from baseline changes from baseline (pre-training vs 1 day post-training)

Fear of pain scores from baseline (pre-training) to 1 day post-training

Fear of pain will be assessed by the Spanish version of Fear of Pain Questionnaire (FPQ). In FPQ questionnaire participants are asked to rate in 30 items how fearful to pain experiences on a 5-point Likert scale. Higher scores represents greater severity of fear of pain symptoms. Fear of pain scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Fear of pain scores from baseline changes from baseline (pre-training vs 1 day post-training)

Pain worrying scores from baseline (pre-training) to 1 day post-training

Pain worrying will be assessed by the Spanish versions of the Pain Catastrophizing Scale (PCS). In this scale, participants rated in 13 items the frequency of experiencing each catastrophic belief on a 0 to 4 Likert scale. Higher scores represents greater severity of pain worrying symptoms. Pain worrying scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Pain worrying scores from baseline changes from baseline (pre-training vs 1 day post-training)

Fibromyalgia impact scores from baseline (pre-training) to 1 day post-training

Fibromyalgia impact will be assessed by the Spanish version of the Fibromyalgia Impact Questionnaire (FIQ). FIQ consists of 10 items for the assessment of three fibromyalgia domains (function, overall impact and symptoms). Higher scores represents greater severity of fibromyalgia impact symptoms. Fibromyalgia impact scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Fibromyalgia impact scores from baseline changes from baseline (pre-training vs 1 day post-training)

Pain scores from baseline (pre-training) to 1 day post-training

Pain status will be assessed by a visual analogue scale (VAS). The scale include 0 to 10 likert scale. Higher scores (i.e., \> 6) represents greater severity of pain intensity symptoms. Pain scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Pain scores from baseline changes from baseline (pre-training vs 1 day post-training)

Fatigue scores from baseline (pre-training) to 1 day post-training

Fatigue status will be assessed by a visual analogue scale (VAS). The scale include 0 to 10 likert scale. Higher scores (i.e., \> 6) represents greater severity of fatigue intensity symptoms. Fatigue scores will be included as intrasubject factor and the training group as between-subject factor.

Time frame: Fatigue scores from baseline changes from baseline (pre-training vs 1 day post-training)

Attentional Bias Modification in Fibromyalgia Patients (ABM)

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes