Effects of t-DCS and Cognitive Training on Apathy in Elderly With Minor Neurocognitive Impairment

Inclusion Criteria: * Age ≥ 65 years * Subject consulting in one of the investigating centers * Clinical diagnosis of Minor Neurocognitive Disorder according to DSM 5 criteria (APA, 2013) * Apathetic syndrome defined according to the Diagnostic Criteria for Apathy (Miller \& al., 2021) * Subject who can read and write French * Subjects who are beneficiaries of a social security plan * Signature of free and informed consent Exclusion Criteria: * Current clinical diagnosis of a depressive episode characterized by DSM 5 criteria (APA, 2013) * Known diagnosis of schizophrenia, bipolar disorder, substance abuse or dependence * Significant sensory or motor impairment * Subject under guardianship, conservatorship, or conservatorship * Active smoking or smoking cessation of less than one year * Contraindications to the practice of tDCS: history of intracranial hypertension, neurosurgery, metallic implant at the cephalic level, pacemaker * Unbalanced epilepsy * Severe somatic disease not stabilized * Previous use of tDCS (problem of maintaining the integrity of the blinding procedure) * Scalp skin disease * Concurrent participation in another drug research study or any other study that may interfere with study results