Lateralization of acquisition and consolidation in direction but not amplitude of a motor skill task

被引:0
作者
Yuk, Jisung [1 ]
Sainburg, Robert L. [1 ,2 ]
机构
[1] Penn State Univ, Dept Kinesiol, University Pk, PA 16802 USA
[2] Penn State Coll Med, Dept Neurol, Hershey, PA USA
基金
美国国家卫生研究院;
关键词
Motor learning; Skill acquisition; Consolidation; Interlimb transfer; Complementary dominance hypothesis; Vectorial planning hypothesis; INTERLIMB TRANSFER; VISUOMOTOR ADAPTATION; HANDEDNESS; ARM; MOVEMENTS; DYNAMICS; DOMINANT; EXTENT; INDEPENDENCE; PERFORMANCE;
D O I
10.1007/s00221-024-06900-0
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Previous research suggests that the neural processes underlying specification of movement direction and amplitude are independently represented in the nervous system. However, our understanding of acquisition and consolidation processes in the direction and distance learning remains limited. We designed a virtual air hockey task, in which the puck direction is determined by the hand direction at impact, while the puck distance is determined by the amplitude of the velocity. In two versions of this task, participants were required to either specify the direction or the distance of the puck, while the alternate variable did not contribute to task success. Separate groups of right-handed participants were recruited for each task. Each participant was randomly assigned to one of two groups with a counter-balanced arm practice sequence (right to left, or left to right). We examined acquisition and, after 24 h, we examined two aspects of consolidation: 1) same hand performance to test the durability and 2) the opposite hand to test the effector-independent consolidation (interlimb transfer) of learning. The distance task showed symmetry between hands in the extent of acquisition as well as in both aspects of consolidation. In contrast, the direction task showed asymmetry in both acquisition and consolidation: the dominant right arm showed faster and greater acquisition and greater transfer from the opposite arm training. The asymmetric acquisition and consolidation processes shown in the direction task might be explained by lateralized control and mapping of direction, an interpretation consistent with previous findings on motor adaptation paradigms.
引用
收藏
页码:2341 / 2356
页数:16
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