Similar hand shaping in reaching-for-food (skilled reaching) in rats and humans provides evidence of homology in release, collection, and manipulation movements
Similar hand shaping in reaching-for-food (skilled reaching) in rats and humans provides evidence of homology in release, collection, and manipulation movements
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DOI：
10.1016/j.bbr.2009.05.035
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发表时间：
2009-12-01
影响因子：
2.7
通讯作者：
Whishaw, Ian Q.
中科院分区：
文献类型：
--
作者：
Sacrey, Lori-Ann R.;Alaverdashvili, Mariam;Whishaw, Ian Q.
许多动物物种使用它们的前肢来帮助进食，例如在伸手去吃任务（熟练的伸手）中发生，其中前肢延伸以抓住放置在口中用于进食的食物。目前还不清楚不同物种的熟练的伸展运动在多大程度上具有共同的祖先，因此是同源的，还是独立进化的，因此是相似的（同质性）。在此，使用大鼠（褐家鼠）和人类（智人）的高速（1000帧/秒）视频记录和运动学测量（Peak Motus）检查了手被运送到目标时发生的手成形（手和手指的运动）。从肢体开始向食物运输到食物被抓住的时间点，确定了十个运动相似性。当手抬起（从基底释放）和旋后时，手指闭合并半屈曲。他们进一步关闭，因为手被收集瞄准。然后，当手被运送到目标时，它们伸展，然后与旋前相结合地打开，以调整手的方向进行抓取（操纵）。最后，手指弯曲并闭合以进行抓握。尽管大鼠使用整个爪子抓取而人类使用钳子抓取，但这些运动在两个物种中几乎发生在肢体运输的同一点。丛林猴（Galago garnettii）、提提猴（Callicebus brunneus）、恒河猴（Macaca mulatta）和倭黑猩猩（Pan paniscus）在熟练的伸手动作中表现出相似的手形，尽管在抓握动作中存在物种差异。在啮齿类动物的分支和灵长类动物的分支和灵长类动物的谱系内Homelands手塑造讨论有关其可能的派生手塑造与步进运动。(C)2009 Elsevier B. V.保留所有权利。
Many animal species use their forelimbs to assist in eating, such as occurs in a reach-to-eat task (skilled reaching) in which a forelimb is extended to grasp food that is placed in the mouth for eating. it is unclear the extent to which the skilled reaching movements of different species share common ancestry and so are homologous or evolved independently and so are analogous (homoplasy). Here hand shaping (the movements of the hand and digits) that occur as the hand is transported to the target, were examined using high-speed (1000 frames/s) video recording and kinematic measurement (Peak Motus) in the rat (Rattus norvegicus) and human (Homo sapiens). Ten movement similarities were identified from the point that the limb initiated transport towards the food item to the point that the food was grasped. The digits were closed and semi-flexed as the hand was lifted (released from a substrate) and supinated. They closed further as the hand was collected for aiming. They then extended as the hand was transported to the target and then opened in conjunction with pronation to orient the hand for grasping (manipulation). Finally the digits were flexed and closed for grasping. These movements occurred at approximately the same point of limb transport in both species even though the rat used a whole paw grasp and the humans used a pincer grasp. Bushbabies (Galago garnettii), titi monkeys (Callicebus brunneus), rhesus monkeys (Macaca mulatta) and the bonobo (Pan paniscus) displayed similar hand shaping in skilled reaching despite species differences in grasping movements. Homologous hand shaping in the rodent clade and the primate clade and within the primate lineage is discussed in relation to its possible derivation from hand shaping movements associated with stepping. (C) 2009 Elsevier B.V. All rights reserved.