Effects of amplitude cueing on postural responses and preparatory cortical activity of people with Parkinson disease.

ABSTRACT:

Background and purpose

Persons with Parkinson disease (PD) are unable to modify their postural responses, and show an associated increase in cortical preparatory activity for anticipated postural perturbations. In this study we asked whether participants with PD could modify their postural responses and cortical preparatory activity when cued to focus on increasing movement amplitude before a series of predictable postural perturbations.

Methods

Twelve participants with PD performed postural responses to 30 identical backward surface translations. We cued participants to focus on increasing movement amplitude, and examined the effects of cueing by measuring postural responses (center-of-pressure initial rate of change, automatic postural response stability, peak trunk flexio

SUBMITTER: Smith BA 

PROVIDER: S-EPMC4322905 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature