Snyder P J, Bonner J A
The National Aviary, Pittsburgh, USA.
Brain Cogn. 2001 Jun-Jul;46(1-2):276-9. doi: 10.1016/s0278-2626(01)80083-x.
The parrot appears to provide a potentially unique animal model of handedness in humans, but few (if any) observational studies of early postnatal development of postural/motor asymmetries have been published. We studied three African Grey hatchlings, raised without human physical contact, for the first 5 months of life. All three animals failed to show consistent postural and/or motor asymmetries until the end of the 4 postnatal week. These results appear to be comparable to data from prior studies with human infants. Delayed development of lateral motor and/or postural preferences may represent an evolutionarily adaptive strategy for altricial animals.
鹦鹉似乎为人类用手习惯提供了一个潜在的独特动物模型，但关于出生后早期姿势/运动不对称发育的观察性研究（即便有）也鲜有发表。我们对三只非洲灰鹦鹉雏鸟进行了研究，它们在出生后的头5个月里没有与人类有过身体接触。在出生后第4周结束前，这三只鹦鹉均未表现出持续的姿势和/或运动不对称。这些结果似乎与之前对人类婴儿的研究数据相当。外侧运动和/或姿势偏好的延迟发育可能是晚成动物的一种进化适应性策略。
