Providing explicit information disrupts implicit motor learning after basal ganglia stroke
Providing explicit information disrupts implicit motor learning after basal ganglia stroke
复制标题
DOI：
10.1101/lm.80104
复制
发表时间：
2004-07-01
影响因子：
2
通讯作者：
Winstein, CJ
中科院分区：
文献类型：
--
作者：
Boyd, LA;Winstein, CJ
尽管他们声称的神经解剖和功能隔离，经验证据表明，有时有意识的外显过程可以影响内隐运动技能学习。我们的目标是确定在基底神经节受损后，外显信息的提供是否会影响内隐运动序列学习。影响基底神经节（BG）的中风患者和健康对照者（HC）进行连续的内隐运动排序任务;一半提供外显信息（EI），另一半不提供（No-EI）。两个BG组的脑损伤的焦点在壳核中。所有的El参与者至少都清楚地意识到了重复的序列。在三天的练习中，明确的信息对各组产生了不同的影响。外显信息干扰了基底神经节卒中患者的采集表现，但健康对照组没有。通过保留（第4天），分离是明显的-外显信息阻碍了基底神经节病变的参与者的内隐学习，但有助于健康对照。看来，在基底神经节卒中后，外显信息对运动计划的发展的帮助不如单独使用内隐系统发现运动解决方案。这可能是由于外显信息对工作记忆的需求增加。因此，基底神经节的完整性可能是决定外显信息对内隐运动序列学习的有效性的关键因素。
Despite their purported neuroanatomic and functional isolation, empirical evidence suggests that sometimes conscious explicit processes can influence implicit motor skill learning. Our goal was to determine if the provision of explicit information affected implicit motor-sequence learning after damage to the basal ganglia. individuals with stroke affecting the basal ganglia (BG) and healthy controls (HC) practiced a continuous implicit motor-sequencing task; half were provided with explicit information (EI) and half were not (No-EI). The focus of brain damage for both BG groups was in the putamen. All of the El participants were at least explicitly aware of the repeating sequence. Across three days of practice, explicit information had a differential effect on the groups. Explicit information disrupted acquisition performance in participants with basal ganglia stroke but not healthy controls. By retention (day 4), a dissociation was apparent-explicit information hindered implicit learning in participants with basal ganglia lesions but aided healthy controls. It appears that after basal ganglia stroke explicit information is less helpful in the development of the motor plan than is discovering a motor solution using the implicit system alone. This may be due to the increased demand placed on working memory by explicit information. Thus, basal ganglia integrity may be a crucial factor in determining the efficacy of explicit information for implicit motor-sequence learning.