Inclusion Criteria:  ≥18 years old No neurological/psychiatric disorders/history of alcohol or drug abuse No current and regular practice of hypnosis, meditation or cognitive trance Diagnosis of cancer (all localisations accepted except brain tumours to avoid any effect on EEG data and cognitive impairments) Active treatments (surgery, chemotherapy, radiotherapy) finished for less than a year. Score of at least 4/10 for one of these four symptoms at baseline: pain, fatigue, sleep difficulties, emotional distress.  Exclusion Criteria:  < 18 year old No cancer diagnosis Neurological or psychiatric disorder Brain tumour ou other tumour with brain metastases Active treatments still ongoing or finished for more than a year No baseline symptom at 4/10