3D Ephemeris to support time orientation in Alzheimer's

Evaluation of the Feasibility, Practicality, and Interest of the 3D Ephemeris, a Tool for the Rehabilitation of Temporal Orientation Disorder in People With Alzheimer's Disease or Related Dementia: Monocentric Observational Pilot Study

Observational Assistance Publique - Hôpitaux de Paris · NCT06824142

This project tests whether a 3D calendar device called the Ephéméride 3D can help people aged 65 and older with mild to moderate Alzheimer's or related dementias stay oriented to the day and time during hospitalization.

Quick facts

Study typeObservational
Enrollment20 (estimated)
Ages65 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations1 site (Champcueil)
Trial IDNCT06824142 on ClinicalTrials.gov

What this trial studies

This pilot is an observational, real-world implementation of a prototype adapted external aid (Ephéméride 3D) to support temporal orientation in older adults with Alzheimer’s disease or related dementias. Occupational therapists will identify participants with temporal orientation impairments using validated tools such as MMSE temporal items and introduce the device in a hospital setting. The study enrolls patients aged 65 and over with mild to moderate cognitive impairment (MMSE >20 or 10–20) who can read French, excluding those with visual blindness, unexplained confusion, or disruptive behavioral disorders. Outcomes include feasibility, patient and therapist interest, and changes in temporal orientation performance measured before and after use of the device.

Who should consider this trial

Good fit: Ideal candidates are people aged 65 or older with mild to moderate Alzheimer’s or related dementia who show temporal orientation errors on the MMSE, can read French, and do not have visual blindness or disruptive behavioral disorders.

Not a fit: Patients with severe dementia, unexplained acute confusion, visual blindness, inability to read French, or significant disruptive behaviors are unlikely to benefit from this device.

Why it matters

Potential benefit: If successful, the device could reduce temporal disorientation and related distress during hospitalization and help patients keep track of the day and time.

How similar studies have performed: External orientation aids such as calendars and clocks have produced mixed or limited benefits in dementia care, and the 3D Ephéméride prototype is a novel approach that is not yet proven.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient ≥ 65 years old.
* Patient presenting with temporal orientation impairment during the MMSE test.
* Patient with an MMSE score above 20 (mild stage) or a score between 10 and 20 (moderate stage).
* Patient who has not expressed any objection.

Exclusion Criteria:

* Presence of one or more disruptive behavioral disorders.
* Presence of confusion of unknown origin.
* Visual blindness.
* Inability to read or understand French.

Where this trial is running

Champcueil

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Alzheimer DiseaseAlzheimer's diseaseRelated dementiaTemporal disorientationRehabilitationAdapted external aid
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.