Publications by authors named "Robyn Massa"
Continuous in-home monitoring of Parkinson's Disease (PD) symptoms might allow improvements in assessment of disease progression and treatment effects. As a first step towards this goal, we evaluate the feasibility of a wrist-worn wearable accelerometer system to detect PD tremor in the wild (uncontrolled scenarios). We evaluate the performance of several feature sets and classification algorithms for robust PD tremor detection in laboratory and wild settings.
View Article and Find Full Text PDFObjectives: Perioperative stroke is a known complication of carotid endarterectomy (CEA) for patients with symptomatic and asymptomatic carotid stenosis. The Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST) has shown that stroke following CEA is associated with nearly a 3-fold increase in the 4-year mortality compared to patients without such an event. However, no studies to date can establish whether the stroke was the cause of the short term mortality.
View Article and Find Full Text PDFBackground: In older adults, impaired postural control contributes to falls, a major source of morbidity. Understanding central mechanisms may help identify individuals at risk for impaired postural control.
Aims: To determine the relationship between gray matter volume (GMV), white matter hyperintensities (WMH), mean diffusivity (MD), and fractional anisotropy (FA) with lateral postural control.
Objectives: To determine the association between catechol-O-methyltransferase (COMT) genotype and 6-m walk time and to determine whether these associations are quadratic in nature, similar to previously reported U-shaped associations between dopamine and gait and cognition.
Design: Prospective cohort study.
Setting: Health, Aging and Body Composition Study.