Within-session and one-week practice effects on a motor task in amnestic mild cognitive impairment.
Within-session and one-week practice effects on a motor task in amnestic mild cognitive impairment.
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DOI：
10.1080/13803395.2016.1236905
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发表时间：
2017-06
影响因子：
2.2
通讯作者：
Duff K
中科院分区：
文献类型：
--
作者：
Schaefer SY;Duff K
练习对神经心理学测试的影响，即由于反复接触测试材料而提高考试成绩，在健康的老年人中表现强劲，但在患有认知障碍的老年人中表现不佳。相反，很少有研究调查练习对涉及程序性记忆的运动任务的影响，特别是在超过24小时的测试重测期间。目前的研究对54名患有遗忘性轻度认知障碍的老年人进行了为期一周的上肢运动训练。结果表明，这些有初级记忆缺陷的人在一次简短的训练和一周的训练中确实在这项运动任务上有所改善。这些实践影响与人口特征或全球认知无关。然而，一周的练习效果与延迟记忆功能呈负相关，更大的练习效果与较差的延迟记忆和潜在的更好的视觉空间能力有关。程序性运动任务的长期练习效果的存在，不仅暗示了如何用涉及内隐记忆的类似测量来解释纵向评估，而且可能为具有更严重陈述性记忆缺陷的患者提供未来的康复策略。
Practice effects on neuropsychological tests, which are improvements in test scores due to repeated exposure to testing materials, are robust in healthy elders, but muted in older adults with cognitive disorders. Conversely, few studies have investigated practice effects on motor tasks involving procedural memory, particularly across test-retest periods exceeding 24 hours. The current study examined one-week practice effects on a novel upper extremity motor task in 54 older adults with amnestic Mild Cognitive Impairment. Results indicate that these individuals with primary memory deficits did improve on this motor task within a brief training session as well as across one week. These practice effects were unrelated to demographic characteristics or global cognition. One-week practice effects were, however, negatively related to delayed memory function, with larger practice effects being associated with poorer delayed memory and potentially better visuospatial ability. The presence of longer-term practice effects on a procedural motor task not only has implications for how longitudinal assessments with similar measures involving implicit memory might be interpreted, but may also inform future rehabilitative strategies for patients with more severe declarative memory deficits.