A patient with localized breast cancer who has undergone surgery and may or may not be about to begin adjuvant treatment with chemotherapy or radiation therapy
Patient with education level 3 "end of primary education"
Patient with a good command of the French language
Patient with access to the Internet from a computer at home
Patient having signed the consent to participate in the study
Patient with no pre-existing cognitive impairment at the time of cancer diagnosis
Patient with a sleep complaint (ISI \> 7)
You may not be if
Patient with metastatic cancer
A patient with a primary cancer other than breast cancer and/or a history of treated cancer
Patient with a history of neurological damage
Patient with treated sleep apnea
Patient with drug use or alcohol abuse (≥3 drinks/day on average and/or \>10 drinks/week)
Patient with a treatment that has not been stabilized for at least 3 months (hypnotics, antidepressants, anxiolytics)
Patient with a personality disorder and/or an evolving psychiatric pathology
Patient with a contraindication to MRI (claustrophobia, metallic objects in the body)
Patient with an uncorrected vision problem
Clareo Health | Impact of Sleep Disturbance on Cognition and Quality of Life in Breast Cancer
