The results of this study will contribute to a better understanding of prospective memory deficit processes in breast cancer in relation to sleep disorders frequently reported in this pathology. In the long term, a better understanding will make it possible to envisage appropriate treatments to compensate for these memory difficulties and to improve the autonomy of the patients.

Inclusion Criteria:

• Major patients under the age of 70;
• Patients who have been treated by surgery or radiotherapy for non-metastatic breast cancer
• Radiotherapy completed for about 6 months
• Level of study 3 "end of primary studies" minimum (Barbizet scale);
• French mother tongue;
• Menopausal women for at least 1 year before the selection visit
• Absence of primary cancer of the central nervous system or brain metastases;
• Absence of previous neurological damage;
• Absence of personality disorders and progressive psychiatric pathology;
• Having signed the informed consent to participate in the study.

Exclusion Criteria:

• Primary cancer other than breast
• Metastatic cancer
• Treated by chemotherapy
• Cognitive function disorders pre-existing to cancer diagnosis
• Patients with paraneoplastic syndrome;
• Evolutionary psychiatric pathology;
• Refusal of participation;
• Patients unable to respond to cognitive tests;
• Drug use or excessive consumption of alcohol.