Actimetry Monitoring of the Paretic Upper Limb in Chronic Post Stroke.

After a stroke, 80% of patients continue to have difficulty using their paretic upper limb in activities of daily living (ADL) despite post-stroke rehabilitation practices that aim to promote the use of the paretic upper limb. It is known that functional recovery depends on actual use (Use it or Loose it), but one-time measurements in the clinic do not allow quantification of the actual use of the paretic upper limb in daily life (in the person's living environment). The investigators hypothesize the feasibility of quantifying functional use of the paretic upper limb by actimetry in clinical routine.

Inclusion Criteria: Inclusion criteria common to all participants: * Be between 18 and 90 years old Post-stroke subjects should: * Having a stroke with motor sequelae in the upper limb * Be in the chronic phase (\>3 months post-stroke) of a stroke whatever the aetiology Exclusion Criteria: Non inclusion criteria common to all participants: * Absence of free, informed and express oral consent * No affiliation to a French social security system or beneficiary of such a system * Patient protected by law * Pregnant or breastfeeding women Not eligible for inclusion, post-stroke subjects: * Not understanding the constraints of the study * Have cognitive impairments that prevent them from understanding the study * With a known hemigligence in the medical record (omission \> 8 on bells test)