How Does the Parkinson Cognitive Test Work Over Video Call?

Parkinson's disease is a neurodegenerative disorder that, besides motor symptoms, can affect memory and attention. To spot these deficits early, doctors use the PD‑CRS, a cognitive screening questionnaire. Researchers tested a telematic version of this tool, meaning it can be administered via video call.\n\nSeventy‑nine Parkinson patients were recruited between October 2020 and February 2024. During the call, participants followed slide‑based instructions and performed webcam‑mediated tasks while the examiner observed and recorded scores. Afterward, both patients and examiners rated perceived difficulty on a 0‑to‑10 visual analogue scale. Average scores were low: 1.6 for patients and 1.43 for examiners, with no significant difference.\n\nNo demographic or clinical factor predicted difficulty, indicating the test is user‑friendly for all profiles. This matters because it overcomes mobility or geographic barriers: people in remote areas or with limited movement can still receive timely cognitive assessment. In the future, the online version could become routine in neurology clinics, shortening waiting times and improving quality of life for Parkinson's patients.

The PD‑CRS (Parkinson’s Disease–Cognitive Rating Scale) assesses four cognitive domains: attention, executive function, memory, and language. The traditional version uses paper materials and requires the examiner’s physical presence, which can introduce environmental bias. In the telematic version, digital slides replaced paper sheets, ensuring uniform instruction delivery. Motor tasks were adapted to visual‑verbal activities (e.g., repeating number sequences) to minimize tremor impact.\n\nStatistically, non‑parametric tests (Mann‑Whitney U) compared VAS scores because the data were not normally distributed (p‑value > 0.05). No significant correlations emerged between V{\"a\"}S and clinical variables (age, disease duration, UPDRS‑III score), confirmed by multivariate logistic regression, indicating perceived difficulty is independent of motor disability.\n\nA study limitation is the lack of a direct comparison with the paper version, which would allow assessment of concordance (intraclass correlation coefficient). Moreover, participants were recruited from specialist centers, possibly more motivated and tech‑sav{\"e\"} than rural patients. Future research should involve a more heterogeneous sample and evaluate the telematic PD‑CRS’s diagnostic validity against the neuropsychological gold standard. Integrating AI algorithms for automatic result analysis could further accelerate early MCI detection in Parkinson’s disease.