This study aims to evaluate neurofeedback-induced changes in brain function and the correlations between these changes and clinical scores by functional magnetic resonance imaging and electroencephalography in patients with low back pain.

Inclusion Criteria:

• Patient with a wifi connexion at home
• Patient with the ability to modulate the height of the candle by thinking in the alpha synchrony test.
• Patient with chronic low back pain for more than six months with a visual analogue pain scale greater than 5 impacting activities of daily living, hobbies and work
• Patient having given free and informed consent and signed consent.
• Affected patient or beneficiary of a health insurance plan.
• Patient who is at least 18 years old (≥) and younger than 75 years old (<).

Exclusion Criteria:

• Pregnant or breastfeeding patient
• Patient with a contraindication to performing a fMRI scan: ferromagnetic implant in the body, piercing, claustrophobia, unable to remain in the scanner stationary for 40 minutes
• Patient already included in another study
• Patient in a exclusion period determined by a previous study
• The subject is under the protection of justice, guardianship or curatorship.
• The subject refuses to sign the consent.
• It is not possible to give the subject informed information.