The quantitative use of velocity information in fast interception
The quantitative use of velocity information in fast interception
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DOI：
10.1007/s00221-004-1832-2
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发表时间：
2004-07-01
影响因子：
2
通讯作者：
Brenner, E
中科院分区：
文献类型：
--
作者：
de Lussanet, MHE;Smeets, JBJ;Brenner, E
我们问是否目标的速度被考虑时，规划一个快速的拦截行动。人类志愿者在一个倾斜的屏幕上击中可以以不同速度移动的目标（手从距离屏幕40厘米处开始）。我们研究了手最初移动的方向如何取决于目标的速度，使用各种分析。对于慢速目标，初始运动方向与目标的速度相适应。这是速度信息被定量地用于指导手的证据。模型分析表明，虽然速度信息可能不用于预测未来的目标位置。对于以高于平均速度或高于12 cm/s的速度移动的目标，初始移动方向不取决于目标的速度。类似的行为也从追踪眼球运动中得知。
We ask whether a target's velocity is considered when planning a fast interceptive action. Human volunteers hit targets that could move at different velocities from across a tilted screen (the hand starting 40 cm away from the screen). We examined how the direction in which the hand initially moved depended on the target's velocity, using various analyses. For slow targets, the initial movement direction was appropriate for the target's velocity. This is evidence that velocity information was used quantitatively in directing the hand. A model analysis showed though that velocity information is probably not used to predict the future target position. For targets moving at a velocity above average, or above 12 cm/s, the initial movement direction did not depend on the target's velocity. Similar behaviour is also known from pursuit eye movements.