Adams-Curtis L, Fragaszy D, England N
Department of Psychology, Millikin University, Decatur, Illinois, USA.
Am J Primatol. 2000 Sep;52(1):55-60. doi: 10.1002/1098-2345(200009)52:1<55::AID-AJP5>3.0.CO;2-F.
We analyzed the spontaneous prehensile activity of two infants living with their mothers in social groups, using videotapes taken once weekly from weeks 5 to 24. Prehensile activities were laterally symmetric. Unimanual activity predominated, although bimanual activity appeared at the same ages as unimanual activity. In most bimanual activity the two hands performed the same action, but complementary actions occurred from the onset of bimanual activity. Extrusion of the tongue towards objects out of reach was observed occasionally, as was precision grasping. Early prehension in capuchins is organized, as in human infants, in a matrix of exploratory activity integrated with vision and oral exploration. Capuchins present a useful model system for the study of manipulative development.
我们使用从第5周到第24周每周拍摄一次的录像带，分析了两个与母亲生活在社会群体中的婴儿的自发抓握活动。抓握活动在两侧是对称的。单手活动占主导，尽管双手活动与单手活动出现在相同年龄。在大多数双手活动中，两只手执行相同的动作，但从双手活动开始就出现了互补动作。偶尔会观察到舌头向够不着的物体伸出，以及精确抓握。卷尾猴的早期抓握行为，如同人类婴儿一样，是在与视觉和口腔探索相结合的探索活动矩阵中组织起来的。卷尾猴为研究操作发展提供了一个有用的模型系统。
