Ontogeny of feeding motor patterns in infant rats: an electromyographic analysis of suckling and chewing.
Ontogeny of feeding motor patterns in infant rats: an electromyographic analysis of suckling and chewing.
复制标题
幼鼠进食运动模式的个体发育：哺乳和咀嚼的肌电图分析。
DOI：
10.1037//0735-7044.106.3.539
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发表时间：
1992
影响因子：
1.9
通讯作者：
Hall,WG
中科院分区：
文献类型：
--
作者：
Westneat,MW;Hall,WG
在哺乳动物的个体发育过程中，有一个从哺乳到咀嚼食物的过渡。问题是：吮吸是咀嚼的神经肌肉前体，还是吮吸和咀嚼是独立的系统？记录6、9、12、15、18和21日龄幼鼠在吮吸和咀嚼过程中浅咬肌、二腹肌前肌、胸骨舌骨肌和颏舌肌的肌电图（EMG）。哺乳行为的3个组成部分（乳头附着、节律性吸吮和牵拉反应）的肌电图模式彼此不同，反映了哺乳的肌肉骨骼生物力学。咀嚼肌肌电图在12日龄时出现，并在18-21日龄时达到成人模式。在乳头附着过程中，幼鼠表现出与成年咀嚼相似的运动模式，但吮吸的其他方面与咀嚼的某些EMG特征不同。行为之间和年龄之间的肌电图比较允许的肌肉活动的连续性程度的解释，在整个吸吮咀嚼过渡。
During mammalian ontogeny, there is a transition from suckling to the chewing of food. The question was asked: Is suckling a neuromuscular precursor to chewing, or are suckling and chewing independent systems? Electromyograms (EMGs) were recorded in rat pups of ages 6, 9, 12, 15, 18, and 21 days from the superficial masseter, anterior digastric, sternohyoideus, and genioglossus muscles during suckling and chewing. The EMG patterns of the 3 components of suckling behavior (nipple attachment, rhythmic sucking and the stretch response) are distinctive from one another and reflect the musculoskeletal biomechanics of suckling. Chewing EMGs are present by 12 days of age and attain the adult pattern by 18–21 days of age. During nipple attachment, pups exhibit a motor pattern that is similar to that of adult chewing, but other aspects of suckling differ from chewing in some EMG features. Comparison of EMGs between behaviors and between ages allowed interpretation of the degree of continuity of muscular activity across the suckling-to-chewing transition.