Adaptation to visuomotor rotations in younger and older adults
Adaptation to visuomotor rotations in younger and older adults
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DOI：
10.1037/0882-7974.23.1.190
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发表时间：
2008-03-01
影响因子：
3.7
通讯作者：
Hegele, Mathias
中科院分区：
文献类型：
--
作者：
Heuer, Herbert;Hegele, Mathias
已知对视觉旋转的适应在老年时受损。作者研究了这种损害是否已经存在于退休前的年龄，以及它是否取决于适应任务的难度。此外，作者测试的假设，即年龄相关的损害主要涉及到战略的更正和明确的知识，他们的基础上，但不收购的（内隐）内部模型的新的视觉转换的预测。作者发现，在退休前的年龄已经有了与年龄相关的适应和外显知识的损害，但没有与年龄相关的后效变化。随着适应任务的逐步简化，与年龄有关的变化得以消除。外显知识质量的个体差异与适应性差异有关，但与后效无关。当年龄组与外显知识相匹配时，与年龄相关的适应障碍基本消失。然而，在其中一个实验中仍然存在可靠的差异，这表明对视觉旋转的其他调整过程也可能受到衰老的影响。
Adaptation to a visuomotor rotation is known to be impaired at older adult age. The authors examined whether the impairment is present already at preretirement age and whether it depends on the difficulty of the adaptation task. Moreover, the authors tested predictions of the hypothesis that the age-related impairment pertains primarily to strategic corrections and the explicit knowledge on which they are based but not to the acquisition of an (implicit) internal model of the novel visuomotor transformation. The authors found an age-related impairment of adaptation and explicit knowledge already at preretirement age but no age-related change of aftereffects. With an incremental simplification of the adaptation task, age-related changes were able to be eliminated. Individual differences of the quality of explicit knowledge were associated with differences of adaptation, but not of aftereffects. When age groups were matched by explicit knowledge, age-related impairments of adaptation largely disappeared. However, a reliable difference remained in one of the experiments, suggesting that other processes of adjustment to a visuomotor rotation might be affected by aging as well.