Hopkins B, Lems Y L, Van Wulfften Palthe T, Hoeksma J, Kardaun O, Butterworth G
Department of Developmental Neurology, University Hospital, Groningen, The Netherlands.
Dev Psychobiol. 1990 Jan;23(1):39-53. doi: 10.1002/dev.420230105.
We studied developmental changes in supine head position preference in a group of 14 healthy full-term infants from age 3 to 18 weeks. The infants assumed an initial head-right position until 12 weeks. For the maintenance of a head position, a loglinear analysis revealed a developmental trend from an initial head orientation to the right to one with the head in the midline at around 12 weeks. The maintenance of a midline head position was preceded by a marked improvement in postural stabilization, defined as the ability to hold the head upright when seated in an infant chair. The relationship between head position preference and behavioral state changed with age: At 3 weeks all infants maintained the same position regardless of state, but by 18 weeks this situation held for only 64% of those who cried. The implications of these findings for the development of handedness are discussed.
我们对一组14名健康足月婴儿从3周到18周仰卧时头部位置偏好的发育变化进行了研究。这些婴儿在12周之前一直保持头部偏向右侧的初始姿势。对于头部位置的维持，对数线性分析显示出一种发育趋势，即从最初头部偏向右侧到大约12周时头部处于中线位置。在中线头部位置的维持之前，姿势稳定性有显著改善，姿势稳定性定义为坐在婴儿椅中时保持头部直立的能力。头部位置偏好与行为状态之间的关系随年龄而变化：3周时，所有婴儿无论处于何种状态都保持相同姿势，但到18周时，只有64%哭泣的婴儿保持这种情况。本文讨论了这些发现对利手发育的影响。
