Perception-action coupling in children with and without DCD: Frequency locking between task-relevant auditory signals and motor responses in a dual-motor task.
Perception-action coupling in children with and without DCD: Frequency locking between task-relevant auditory signals and motor responses in a dual-motor task.
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患有和不患有 DCD 的儿童的知觉-动作耦合：双运动任务中与任务相关的听觉信号和运动反应之间的频率锁定。
DOI：
10.1111/j.1365-2214.2006.00676.x
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Clark,JE
中科院分区：
文献类型：
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作者：
Whitall,J;Getchell,N;McMenamin,S;Horn,C;Wilms-Floet,A;Clark,JE
当前的研究考察了知觉和运动过程之间的关系，即知觉-动作或感觉-运动耦合，以及当存在与任务相关的驱动感觉信号时，有和没有发育协调障碍（DCD）的儿童和成人在大动作协调任务（拍手行进）中知觉-动作耦合的潜在差异。方法选取10例DCD患儿（7.32 + 0.23岁）、8例年龄、性别和种族/民族匹配的典型发育（TD）患儿（6.91 + 0.24岁）和10名大学年龄成人作为研究对象。参与者鼓掌并跟着四种不同频率的听觉节拍行进：0.8、1.2、1.6和2.0赫兹。计算平均相对相位（MRP）和相对相位变异性（VRP）的相对时间测量，并采用3（组）× 4（频率）× 2（肢体）方差分析进行比较。定性地，评估参与者是否存在绝对耦合（100% + 15% MRP）。结果MRP在耦合、频率和组之间存在统计学差异，事后分析表明成年组与DCD组和TD组均存在差异，两者之间没有差异。在VRP中，耦合和组之间存在显著的主效应，组和频率之间存在显著的交互作用，事后分析表明DCD组与TD组和成年组不同。从质量上讲，随着频率的增加，成年人和TD群体采用绝对耦合的参与者数量都有所增加。相比之下，DCD参与者总体上采用这种绝对耦合的频率要低得多；事实上，采用这种模式的参与者数量随着频率的增加而减少。结论DCD患儿在这一特定任务的协调和知觉-动作耦合控制方面存在困难。
BackgroundThe current research examines the relationship between perceptual and motor processes, known as perception–action or sensorimotor coupling, and the potential differences in perception–action coupling among children with and without Developmental Coordination Disorder (DCD) and adults in a gross‐motor co‐ordination task (clapping while marching) when a task‐relevant driving sensory signal is present.MethodsTen children with DCD (7.32 + 0.23 years), eight typically developing (TD) children who were age‐, gender‐ and racially/ethnically matched (6.91 + 0.24 years) and 10 college‐aged adults were participants in this study. Participants clapped and marched to an auditory beat at four different frequencies: 0.8, 1.2,1.6 and 2.0 Hz. The relative timing measures of mean relative phase (MRP) and variability of relative phase (VRP) were calculated and compared using 3 (group) x 4 (frequency) x 2 (limb)anovas. Qualitatively, participants were assessed for the presence of absolute coupling (100% + 15% MRP).ResultsStatistically significant differences in MRP occurred for coupling, frequency and group, and post hoc analysis indicated that the adult group differed from both the DCD and TD groups, who did not differ from each other. In VRP, there were significant main effects for coupling and group, and a significant interaction between group and frequency, with post hoc analysis indicating the DCD group to be different from the TD and adult groups. Qualitatively, both the adult and TD groups increased in the number of participants who adopt absolute coupling as frequency increases. In contrast, the DCD participants adopt this absolute coupling far less frequently overall; in fact, the number of participants adopting this pattern decreases as frequency increases.ConclusionsThese results indicate that children with DCD have difficulties with both the co‐ordination and the control of their perception–action coupling for this particular task.