Dynamic field theory of movement preparation
Dynamic field theory of movement preparation
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DOI：
10.1037//0033-295x.109.3.545
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发表时间：
2002-07-01
影响因子：
5.4
通讯作者：
Schöner, G
中科院分区：
文献类型：
--
作者：
Erlhagen, W;Schöner, G
提出了一个理解运动准备的理论框架。运动参数由激活场表示，激活场是在度量空间上定义的分布。这些场在不同来源的局部输入的影响下演变，代表着即将到来的运动信息。局部激活模式通过领域内的合作和竞争相互作用自稳定。任务环境由第二类字段表示，这些字段塑造了运动参数的表示。该模型解释了大量关于运动启动的实证研究结果（运动准备的连续性和分级性质、对任务度量的依赖性、刺激不确定性效应、刺激-反应相容性效应、西蒙效应、预防范式等），并提出了探索运动表征结构的新方法。
A theoretical framework for understanding movement preparation is proposed. Movement parameters are represented by activation fields, distributions of activation defined over metric spaces. The fields evolve under the influence of Various sources of localized input, representing information about upcoming movements. Localized patterns of activation self-stabilize through cooperative and competitive interactions within the fields. The task environment is represented by a 2nd class of fields, which preshape the movement parameter representation. The model accounts for a sizable body of empirical findings on movement initiation (continuous and graded nature of movement preparation, dependence on the metrics of the task, stimulus uncertainty effect, stimulus-response compatibility effects, Simon effect, precuing paradigm, and others) and suggests new ways of exploring the structure of motor representations.