In this study the participants can be recruited via scheduled consultation and external institutions (associations, senior club..). Neuropsychological assessment will be realize to determine presence or absence of neurodegenerative disease.

Study test is ecological MAI. This test are assigned in two groups (with or without neurocognitive disorders).

In this study the participants can be recruited via scheduled consultation and external institutions (associations, senior club..). Neuropsychological assessment will be realize to determine presence or absence of neurodegenerative disease.

Study test is ecological MAI. Participation will be 30 minutes for patients see in case of routine care and 2h30 for those accompanying the patients and participants recruited in external institutions.

Participants are assigned in two groups. Group 1 : with neurocognitive disorders Group 2 : without neurocognitive disorders

Benefits :

For participants without neurodegenerative disorder, study enables to take control early if anomaly will be detected.

The study permit to have cognitive assessment.

Risk : It's possible that participants feel tired. No constraints for participants seen during scheduled consultation.

Inclusion Criteria:

• Male or female ≥ 70 ans
• Person have good locomotion, move independently
• Personne agree to participate

Groupe 1 : 17≤MMSE≤24 (GRECO) Diagnosis of neurodegenerative diseases (major neurocognitive disorders: Alzheimer, mixed dementia, lobar frontotemporal degeneration, vascular dementia).

Groupe 2 : MMSE ≥ à 25 (GRECO) Without neurodegenerative disease

Exclusion Criteria:

• Person with legal protective measures
• Person deprived of liberty
• Mental retardation or MMSE≤ 16
• Understanding verbal disorders
• Visual major disturbances
• Person with disease causing increased fatigue
• Person with psychiatric pathology excepted anxiety disorder or depression with mild episodes.
• Person not covered by French national health insurance