Effects of Musical Intervention by a Therapist (IMT) on Falling Asleep and Behavioral Regulation in a Secure Care Unit (SCU)

Inclusion Criteria: * Signature of consent by the patient's legal guardian obtained after providing information * Patients aged 60 and over who meet the diagnostic criteria for Alzheimer's disease and related disorders, including mainly: Lewy body disease, frontotemporal lobar degeneration, progressive supranuclear palsy, corticobasal degeneration, vascular encephalopathy, alcoholic dementia, primary progressive aphasia syndrome, posterior cortical atrophy syndrome (France Alzheimer, 2024). * Patient living in a secure care unit * If taking psychotropic drugs, they must have been stable for 3 months * If taking level 2 or 3 painkillers, they must have been stable for 1 month Exclusion Criteria: * Refusal to participate * Participation in a study on a drug/medical device/treatment technique that may affect sleep or behavior. * Highly sedated patients, * Patients with acute medical instability, * Patients with productive delusions, * Patients who have been in the unit for less than 1 month