Tools for the Differential Diagnosis of Fibromyalgia Based on Cognitive Tasks

Inclusion Criteria: Fibromyalgia patients: * Primary diagnosis of fibromyalgia according to the criteria used by the healthcare professional in charge of the patient. * Other comorbidities are accepted as long as the pain caused by them is less severe than the pain caused by fibromyalgia. * Willingness and ability to fully understand the content and scope of the experiment and to comply with the experiment instructions. * Normal or corrected-to-normal vision. Healthy controls: * No history of neurological diseases, chronic pain or musculoskeletal disorders. * Willingness and ability to fully understand the content and scope of the experiment and to comply with the experiment instructions. * Normal or corrected-to-normal vision. Exclusion Criteria: Fibromyalgia patients: * Pregnancy * History of addictive behavior, defined as alcohol, cannabis, opioids or other drugs abuse. * Presence of fever, tuberculosis, malignant tumors, infectious processes, acute inflammatory processes. * Lack of cooperation Healthy controls: * Pregnancy * History of chronic pain or musculoskeletal or articular disorders * History of addictive behavior, defined as alcohol, cannabis, opioids or other drugs abuse. * Presence of fever, tuberculosis, malignant tumors, infectious processes, acute inflammatory processes. * Lack of cooperation