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Anticipating future actions: Motor planning improves with age in wild bearded capuchin monkeys (Sapajus libidinosus)
Developmental Science ( IF 3.1 ) Pub Date : 2020-12-20 , DOI: 10.1111/desc.13077
Valentina Truppa 1 , Gloria Sabbatini 1 , Patricia Izar 2 , Dorothy M Fragaszy 3 , Elisabetta Visalberghi 1
Affiliation  

Self-directed object manipulation tasks illuminate development of motor planning. Grasping strategies that lead to good object control to perform the following action(s) reveal second-order motor planning. Motor planning for efficient grips develops slowly in children. Age-related differences in other primates have been poorly investigated. Here, we investigated anticipatory motor planning of infant, juvenile and adult wild capuchin monkeys grasping a horizontally positioned stick baited to the left or right side (a version of the elevated spoon task). We recorded the grasps capuchins used to bring the baited end of the stick to the mouth. The percentage of efficient radial grips positively correlated with age and adults used efficient grips significantly more frequently than infants. Adult wild capuchins' use of radial grips was higher than that reported for adult captive capuchins in similar tasks, suggesting that experience throughout life may influence motor anticipation. Self-directed object manipulation tasks will be useful to compare this aspect of cognition across primates. A video abstract of this article can be viewed at https://youtu.be/a1Zbr_AQkb8.

中文翻译:

预测未来的行动:野生胡须卷尾猴(Sapajus libidinosus)的运动计划随着年龄的增长而改善

自我导向的对象操作任务阐明了运动规划的发展。掌握导致良好对象控制以执行以下动作的策略揭示了二阶运动规划。儿童有效抓握的运动规划发展缓慢。其他灵长类动物与年龄相关的差异尚未得到很好的研究。在这里,我们调查了婴儿、少年和成年野生卷尾猴的预期运动规划,它们抓着一根水平放置的棍子,放在左侧或右侧(高架勺子任务的一个版本)。我们记录了卷尾猴用于将带诱饵的棍子末端送入嘴中的抓握动作。有效径向抓握的百分比与年龄呈正相关,成人使用有效抓握的频率明显高于婴儿。成年野生卷尾猴 在类似任务中,径向抓握的使用率高于成年圈养卷尾猴的报告,这表明终生的经验可能会影响运动预期。自我导向的对象操作任务将有助于比较灵长类动物的这一认知方面。可以在 https://youtu.be/a1Zbr_AQkb8 上查看本文的视频摘要。
更新日期:2020-12-20
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