Non-Invasive Brain Stimulation and Cognitive Training for Depressive Symptomatology Related to Breast Cancer (ONCODEP)

Inclusion Criteria: * Diagnosis of breast cancer in early stages (life expectancy greater than 12 months). * Patients who are receiving or have finished (maximum 6 months prior to participation in the participating in the study) some type of oncological treatment (Chemotherapy, Radiotherapy, Immunotherapy, Hormonal Therapy). * Patients whose mother tongue is Galician or Spanish. * Ability to give informed consent. * Present depressive symptomatology: score of 4 or higher in the BDI-FS. * Ability to use WhastApp * Have access to some technology (desktop computer, laptop or tablet) and the Internet (Firefox or Chrome browsers). Exclusion Criteria: * Pregnant or breastfeeding women. * Patients with metastasis. * Patients with a mental health disorder (major depressive disorder, bipolar,anxious, psychotic...) diagnosed by a psychiatrist prior to the oncological process. * Patients with a history of cognitive impairment or dementia prior to the oncologic process. oncological process. * Patients with a history of neurosurgery, cortical lesions or neurological alterations prior to the oncological process. * Patients with history or current consumption of non-prescribed drugs. * Patients with the following medication regimen: mood stabilizers, antipsychotics, anticonvulsants, l-dopa, rivastigmine, dextromethorphan, flunarizine, sulpiride, use of benzodiazepines (excluding long half-life benzodiazepines (Bromazepam, Diazepam) on a continuous/habitual basis,Alprazolam \>1mg per da…