How aging affects visuomotor adaptation and retention in a precision walking paradigm.
How aging affects visuomotor adaptation and retention in a precision walking paradigm.
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DOI：
10.1038/s41598-020-80916-8
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发表时间：
2021-01-12
影响因子：
4.6
通讯作者：
Marigold DS
中科院分区：
文献类型：
--
作者：
Bakkum A;Gunn SM;Marigold DS
运动技能的学习是一个终身的过程。然而，与年龄相关的肌肉骨骼和感觉系统的变化改变了感觉输入和运动输出之间的关系（或映射），从而可能影响运动学习。在这里，我们问年龄是否会影响适应和保留在地上行走时学到的新视觉映射的能力。我们根据实际年龄将参与者分为三组（每组n = 12）：老年组（20-39岁）;中年组（40-59岁）;老年组（60-80岁）。参与者学习了一个新的视觉映射，诱导棱镜透镜，在精密行走任务。一周后，我们评估了留存率。我们没有发现年龄对适应或储蓄措施（定义为更快的再学习）的显着影响。然而，我们发现，老年人表现出减少初步回忆的映射，反映了更大的脚放置错误在第一次适应试验一周后。此外，我们发现年龄的增加与初始回忆的减少显著相关。总的来说，我们的研究结果表明，衰老不会损害适应能力，老年人可以证明视力的储蓄。然而，老年人在重新学习过程中需要一些初始背景来回忆适当的映射。
Motor learning is a lifelong process. However, age-related changes to musculoskeletal and sensory systems alter the relationship (or mapping) between sensory input and motor output, and thus potentially affect motor learning. Here we asked whether age affects the ability to adapt to and retain a novel visuomotor mapping learned during overground walking. We divided participants into one of three groups (n = 12 each) based on chronological age: a younger-aged group (20–39 years old); a middle-aged group (40–59 years old); and an older-aged group (60–80 years old). Participants learned a new visuomotor mapping, induced by prism lenses, during a precision walking task. We assessed retention one-week later. We did not detect significant effects of age on measures of adaptation or savings (defined as faster relearning). However, we found that older adults demonstrated reduced initial recall of the mapping, reflected by greater foot-placement error during the first adaptation trial one-week later. Additionally, we found that increased age significantly associated with reduced initial recall. Overall, our results suggest that aging does not impair adaptation and that older adults can demonstrate visuomotor savings. However, older adults require some initial context during relearning to recall the appropriate mapping.
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影响因子：
4.2
作者：
Hardwick RM;Celnik PA
通讯作者：
Celnik PA
影响因子：
2.5
作者：
Alexander, M. Scott;Flodin, Brent W. G.;Marigold, Daniel S.
通讯作者：
Marigold, Daniel S.
影响因子：
2.5
作者：
Criscimagna-Hemminger, Sarah E.;Bastian, Amy J.;Shadmehr, Reza
通讯作者：
Shadmehr, Reza
影响因子：
2.6
作者：
CANAVAN, AGM;PASSINGHAM, RE;POLKEY, CE
通讯作者：
POLKEY, CE
影响因子：
3.7
作者：
Heuer, Herbert;Hegele, Mathias
通讯作者：
Hegele, Mathias