Inclusion Criteria:

• Chemotherapy-naive patient
• Patient with first-line indication for intravenous cyclic chemotherapy
• Affiliated to a social security system
• Having received full information on the organization of the research and having given free, informed and written consent signed by the participant and the investigator
• Patient understands French or English
• Expected duration of chemotherapy session for the first 3 cycles greater than 30 minutes

exclusion criteria :

• Patient with communication disorders preventing informed consent
• Patient under legal protection (guardianship, curatorship, safeguard of justice)
• Patients suffering from epilepsy
• Severe visual or hearing impairment preventing use of headphones
• Psychiatric pathologies such as delusional disorders, hallucinations or schizophrenia.
• Patients with infections or facial wounds
• Patients with severe claustrophobia
• Patients with pacemakers
• Patients with known cognitive or learning problems,
• Patients with brain tumors or metastases,
• Patients suffering from motion sickness
• Expected duration of chemotherapy session for the first 3 cycles of 30 minutes or less.