Fagot J, Drea C M, Wallen K
Yerkes Regional Primate Research Center, Emory University.
J Comp Psychol. 1991 Sep;105(3):260-8. doi: 10.1037/0735-7036.105.3.260.
Asymmetrical hand use by rhesus monkeys (Macaca mulatta) was investigated in a series of tactually and visually guided tasks. The 1st experiment recorded manual preferences of 29 monkeys for solving a haptic discrimination task in a hanging posture. There was a left-hand population bias: 21 monkeys had a left-hand bias, 4 a right-hand bias, and 4 no bias. The 2nd experiment, 4 tasks with 23 to 51 monkeys, investigated the critical components of the 1st experiment by varying the posture (hanging, sitting, or tripedal) and the sensory requirements (tactile or visual). Posture influenced hand bias, with a population-level left-hand bias in hanging and sitting postures, but an almost symmetrical distribution in the tripedal posture. A left-hand bias was found for both sensory modalities, but the bias was stronger in the tactual tasks. Results suggest a possible right-hemisphere specialization in the rhesus for tactile, visual, or spatial processing.
在一系列触觉和视觉引导任务中，对恒河猴（猕猴）的不对称手使用情况进行了研究。第一个实验记录了29只猴子在悬挂姿势下解决触觉辨别任务时的手动偏好。存在左手群体偏向：21只猴子有左手偏向，4只猴子有右手偏向，4只猴子无偏向。第二个实验，对23至51只猴子进行了4项任务，通过改变姿势（悬挂、坐着或三足站立）和感官要求（触觉或视觉）来研究第一个实验的关键组成部分。姿势影响手的偏向，在悬挂和坐着姿势下群体水平上存在左手偏向，但在三足站立姿势下分布几乎对称。两种感觉模式都发现了左手偏向，但在触觉任务中偏向更强。结果表明，恒河猴在触觉、视觉或空间处理方面可能存在右半球特化。
