Lipsitt L P, Reilly B M, Butcher M J, Greenwood M M
Dev Psychobiol. 1976 Jul;9(4):305-10. doi: 10.1002/dev.420090402.
The sucking behavior of 44 newborns was recorded along with heart rate (HR) and respiration. These 3 systems showed stability over a 24-hr period. Sucking parameters varied markedly depending upon whether the infant was sucking for sucrose or under a no-fluid condition. Moreover, HR was strikingly affected by sweetness. The direction of HR change was toward increasing rates when sucking for sweet, even though sucking for sweet substances occurs more slowly than for no fluid.
记录了44名新生儿的吸吮行为以及心率（HR）和呼吸情况。这三个系统在24小时内表现出稳定性。吸吮参数根据婴儿是在吸吮蔗糖还是处于无液体状态而有显著差异。此外，心率受甜度的影响显著。即使吸吮甜味物质的速度比无液体时慢，但吸吮甜味时心率变化的方向是加快。
