Impaired sense of smell is present in most patients with Parkinson disease (PD) at an early stage. This article aims to explore the relationship between smell and perception of vertical in PD. Smell was tested by scratch cards with different odors. Subjective visual vertical was assessed by a computerized rod and frame (CRAF) test (similar to a computer game). Nondisabled controls were more likely to correctly identify odors than were patients with PD. There were minor differences between the two groups in their visual perception, but patients with PD and a lower cognitive score took more time to complete the subjective visual vertical test. More research is needed in using the CRAF test in rehabilitation.
Volume 49 Number 6, 2012
Pages 961 — 970
Last Reviewed or Updated Thursday, August 16, 2012 11:21 AM