How do age and nature of the motor task influence visuomotor adaptation? Gait Posture 2015 Oct;42(4):564-8
Date
09/20/2015Pubmed ID
26385199Pubmed Central ID
PMC4651796DOI
10.1016/j.gaitpost.2015.09.001Scopus ID
2-s2.0-84948719727 (requires institutional sign-in at Scopus site) 12 CitationsAbstract
Visuomotor adaptation with prism glasses is a paradigm often used to understand how the motor system responds to visual perturbations. Both reaching and walking adaptation have been documented, but not directly compared. Because the sensorimotor environment and demands are different between reaching and walking, we hypothesized that characteristics of prism adaptation, namely rates and aftereffects, would be different during walking compared to reaching. Furthermore, we aimed to determine the impact of age on motor adaptation. We studied healthy younger and older adults who performed visually guided reaching and walking tasks with and without prism glasses. We noted age effects on visuomotor adaptation, such that older adults adapted and re-adapted slower compared to younger adults, in accord with previous studies of adaptation in older adults. Interestingly, we also noted that both groups adapted slower and showed smaller aftereffects during walking prism adaptation compared to reaching. We propose that walking adaptation is slower because of the complex multi-effector and multi-sensory demands associated with walking. Altogether, these data suggest that humans can adapt various movement types but the rate and extent of adaptation is not the same across movement types nor across ages.
Author List
Nemanich ST, Earhart GMAuthor
Sam Nemanich Ph.D. Assistant Professor in the Occupational Therapy department at Marquette UniversityMESH terms used to index this publication - Major topics in bold
Adaptation, PhysiologicalAdult
Age Factors
Aged
Aged, 80 and over
Female
Humans
Male
Middle Aged
Movement
Psychomotor Performance
Walking
Young Adult
