Lion-tailed macaques show a stable direction and reinforcement of hand preference in simple reaching tasks over several years

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-05-18 DOI:10.25225/jvb.21076

Barbora Kuběnová, S. Lhota, Veronika Tomanová, Vladimír Blažek, Martina Konečná

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引用次数: 2

Abstract

Abstract. Research on hand preference in non-human primates provides information about the evolutionary origin of population-level bias of human handedness. Human hand preference has been shown to remain stable throughout an individual's lifespan. However, the stability of hand preference and its change with age in non-human primates remains questionable. We recorded hand use in lion-tailed macaques (Macaca silenus) during simple reaching tasks in three time periods over six years. We tested the effect of age and body posture on the direction and strength of hand preference in 23 observed individuals. In a subsample of 13 individuals followed for two or three subsequent time periods, we assessed the stability of hand preference across study periods. The direction of hand preference was highly stable; we detected no individuals changing from a left- to right-, or right- to left- preference and repeated quantitative measures of hand preference were correlated among subsequent study periods. Hand preference was, however, reinforced in older individuals and an individual's hand preference was stronger in postures with both hands free for foraging. Stable hand preference at an individual level, and its reinforcement over an individual's lifetime, is emerging as a robust finding across the primate order.

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几年来，狮尾猕猴在简单的伸手任务中表现出稳定的方向和更强的手偏好

摘要对非人类灵长类动物的手偏好的研究提供了关于人类利手倾向的种群水平偏差的进化起源的信息。人类对手的偏好已被证明在个体的一生中保持稳定。然而，非人类灵长类动物的手偏好的稳定性及其随年龄的变化仍然值得怀疑。我们记录了狮尾猕猴（Macaca silenus）在六年内的三个时间段内，在简单的伸手任务中的用手情况。我们在23名观察到的个体中测试了年龄和身体姿势对手偏好方向和力量的影响。在随后的两到三个时间段内，我们对13名个体的子样本进行了跟踪，评估了研究期间手偏好的稳定性。手偏好的方向高度稳定；我们没有发现个体从左到右或从右到左的偏好发生变化，并且在随后的研究期间，手偏好的重复定量测量是相关的。然而，年龄较大的个体对手的偏好得到了加强，在双手自由觅食的姿势中，个体的手偏好更强。在个体层面上，稳定的手偏好，以及在个体一生中的强化，正在成为整个灵长目动物中的一个强有力的发现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.