Table 1 Participant selection criteria.

Inclusion Criteria for Fibromyalgia Patients.

• Meeting the Fibromyalgia1990 and 2010 criteria.

• Woman with Fibromyalgia diagnosed by a trained Rheumatologist.

• Spontaneous, continuous and intense pain in daily life (VRS > 5 average of a month)

• Right-handed.

Inclusion Criteria for Healthy Controls.

• Healthy Adult Woman.

• Right-handed.

Exclusion Criteria for Fibromyalgia Patients and Healthy Controls.

• Impossibility to move or walk.

• Uncontrolled endocrine problems.

• Neurological alterations (i.e. stroke, epilepsy, recent traumatic brain injury).

• Auditory problems.

• MRI contraindications (i.e., metal prosthetics).

• Pregnancy and/or breast-feeding.

Elimination Criteria for Fibromyalgia Patients and Healthy Controls.

• Excessive artifacts in MRI.

• Probable pathological findings in MRI.