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首页> 外文期刊>The European Journal of Neuroscience >Attentional demands reflect learning-induced alterations of bimanual coordination dynamics.
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Attentional demands reflect learning-induced alterations of bimanual coordination dynamics.

机译：注意需求反映了学习引起的双手协调动力学的变化。

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摘要

This study aimed to investigate the effects of practice on bimanual coordination dynamics and attentional demands. Participants were asked to perform a dual-task associating a cyclic antiphase bimanual pattern and a discrete reaction time task. A pretest determined each individual critical transition frequency. In the training session, participants practised 120 trials. They were instructed to maintain the antiphase coordination pattern at the critical transition frequency. The training session was interrupted and followed by an intermediate test (after 60 trials) and a post-test (30 min after 120 trials), respectively. A retention test was performed 7 days after the end of the training session. Results showed that: (i) the number of transitions decreased as a consequence of practice; and (ii), subjects were able to maintain the antiphase pattern at a higher frequency than in the pretest. Analysis of the trade-off between relative phase variability and reaction time showed that participants were able to maintain a higher level of stability at the same (intermediate and post-test) or a lower attentional cost (retention test). These findings show that phase transition dynamics and pattern stability can be significantly modified as a result of practice. Changes in the trade-off between pattern stability and cost with learning confirm that the attentional cost incurred by the central nervous system to maintain pattern stability decreased with practice. In line with recent neurobiological studies, the present study provides new insights regarding relationships between brain processes, attentional demands and coordinated behaviour in learning bimanual patterns.
机译：这项研究旨在调查实践对双手协调动力学和注意需求的影响。要求参与者执行将循环反相两手模式与离散反应时间任务相关联的双重任务。预测试确定了每个单独的关键过渡频率。在培训课程中，参与者进行了120次试验。他们被指示将反相配位模式维持在临界转变频率。培训课程被打断，分别进行了中级测试（60次试验后）和后测试（120次试验后30分钟）。训练结束后7天进行了保留测试。结果表明：（i）由于实践，过渡次数减少了; （ii）与以前的测试相比，受试者能够以更高的频率维持反相模式。分析相对相变性和反应时间之间的权衡关系表明，参与者能够在相同的条件下（中级和后期测试）或较低的注意力成本（保持力测试）保持较高的稳定性。这些发现表明，由于实践，相变动力学和图案稳定性可以得到显着改善。模式稳定性和学习成本之间的权衡取舍变化证实，中枢神经系统为保持模式稳定性而引起的注意成本随着实践而降低。与最近的神经生物学研究一致，本研究提供了关于大脑过程，注意力需求和学习双手模式中协调行为之间关系的新见解。

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