Article

This article describes an open cross-sectional observational study involving 47
participants with Parkinson disease (PD) and 47 (age- and sex-matched)
nondisabled controls without PD. The aim was to determine the profiles of
subjective visual vertical (SVV) perception and sense of smell perception in both
groups. There was a statistically significant difference (p < 0.001) between
patients and controls on their smell test performance. Controls were more likely
to correctly identify odors, with a median score of 10 out of 12 compared with
6.5 out of 12 for patients with PD. The median SVV error for the PD group when
the frame was untilted was 0.75 degrees compared with 0.50 degrees for controls.
This difference was statistically significant (p = 0.02). When the frame was
tilted, the median SVV error for the PD group was 2.31 degrees compared with 2.00
degrees for controls (not statistically significant), with both groups showing
similar distribution pattern of errors. There was no statistical correlation
between number of correctly identified odors and an individual's SVV error.
However, a statistically significant negative correlation
(r = -0.45, p = 0.01)
was found between Mini-Mental State Examination score and mean time taken to
complete each rod and frame test in patients with PD, suggesting that SVV errors
might be more correlated with cognitive function than with loss of sense of smell.

Langue : ANGLAIS