Posture dependent factors influence movement variability when reaching to nearby virtual objects.

ABSTRACT: Reaching movements are subject to noise arising during the sensing, planning and execution phases of movement production, which contributes to movement variability. When vision of the moving hand is available, reach endpoint variability appears to be strongly influenced by internal noise associated with the specification and/or online updating of movement plans in visual coordinates. In contrast, without hand vision, endpoint variability appears more dependent upon movement direction, suggesting a greater influence of execution noise. Given that execution noise acts in part at the muscular level, we hypothesized that reaching variability should depend not only on movement direction but initial arm posture as well. Moreover, given that the effects of execution noise are more apparent when h

SUBMITTER: Phataraphruk P 

PROVIDER: S-EPMC9641121 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature