Catching a ball at the right time and place: individual factors matter.
Catching a ball at the right time and place: individual factors matter.
复制标题
DOI：
10.1371/journal.pone.0031770
复制
发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Lacquaniti F
中科院分区：
文献类型：
--
作者：
Cesqui B;d'Avella A;Portone A;Lacquaniti F
拦截运动目标需要精确的时空控制。几项研究已经调查了CNS如何应对这样一个具有挑战性的任务，重点是用于提取目标运动参数的信息的性质和一般控制策略的识别。在本研究中，我们提供的证据表明，正确的时间和地点的碰撞是不是明确指定的CNS为一个给定的目标运动，相反，不同的，但同样成功的解决方案，可以通过不同的主题时，任务的限制是松散的。我们对14名受试者的手臂运动学进行了表征，并对6名受试者的一个子集进行了详细分析，这些受试者在被要求在三维空间中捕捉飞行球时表现出相当的成功率。为了获得不同的到达飞行时间和高度条件，球被驱动发射装置发射。个体间的变异性，观察到在几个运动学参数，如手腕轨迹，手腕速度曲线，时间和空间分布的影响点，上肢姿势，躯干运动，和submovement分解。个人特质行为是一致的，在不同的球飞行时间的条件下，并在两个实验会议进行了一年的距离。这些结果突出了在拦截任务的研究中系统地描述个体因素的重要性。
Intercepting a moving object requires accurate spatio-temporal control. Several studies have investigated how the CNS copes with such a challenging task, focusing on the nature of the information used to extract target motion parameters and on the identification of general control strategies. In the present study we provide evidence that the right time and place of the collision is not univocally specified by the CNS for a given target motion; instead, different but equally successful solutions can be adopted by different subjects when task constraints are loose. We characterized arm kinematics of fourteen subjects and performed a detailed analysis on a subset of six subjects who showed comparable success rates when asked to catch a flying ball in three dimensional space. Balls were projected by an actuated launching apparatus in order to obtain different arrival flight time and height conditions. Inter-individual variability was observed in several kinematic parameters, such as wrist trajectory, wrist velocity profile, timing and spatial distribution of the impact point, upper limb posture, trunk motion, and submovement decomposition. Individual idiosyncratic behaviors were consistent across different ball flight time conditions and across two experimental sessions carried out at one year distance. These results highlight the importance of a systematic characterization of individual factors in the study of interceptive tasks.
登录
查看更多内容
影响因子：
2.5
作者：
LACQUANITI, F;CARROZZO, M;BORGHESE, NA
通讯作者：
BORGHESE, NA
影响因子：
1.8
作者：
Button, C;Davids, K;Savelsbergh, GJP
通讯作者：
Savelsbergh, GJP
影响因子：
1.8
作者：
Brouwer, AM;L贸pez-Moliner, J;Smeets, JBJ
通讯作者：
Smeets, JBJ
影响因子：
2
作者：
de Lussanet, MHE;Smeets, JBJ;Brenner, E
通讯作者：
Brenner, E
DOI：
10.1037/0096-1523.31.5.1004
发表时间：
2005-10-01
影响因子：
2.1
作者：
Gray, R;Sieffert, R
通讯作者：
Sieffert, R