Uchida K, Yamada Y, Sato T
Department of Oral Physiology, Nagasaki University School of Dentistry, Japan.
Physiol Behav. 1994 May;55(5):795-801. doi: 10.1016/0031-9384(94)90062-0.
To analyze the relationship between swallowing and rhythmical licking movement, jaw movement trajectories and muscle activities were recorded during water drinking in freely behaving rabbits. Three types of swallows were identified based on the configurations in thyrohyoid burst with the cycle phases. They were distinguished by whether the burst stayed in the opening phase; whether it continued over the opening phase until the closing phase; and whether it began in the closing phase and ended in the opening phase. The occurrence frequencies were 66%, 20%, and 14%, respectively, for the three types. The duration of the opening phase and burst durations in the jaw opening muscles in swallowing cycles were longer than those in licking cycles regardless when the swallow occurred. However, there were small influences of the thyrohyoid burst on a duration of the closing phase. The results suggest that during licking and swallowing, the digastric muscle may mainly work as a jaw opening-related muscle, and the mylohyoid muscle may work as both a jaw opening-related muscle and a swallowing-related muscle.
为了分析吞咽与节律性舔舐运动之间的关系，在自由活动的兔子饮水过程中记录了下颌运动轨迹和肌肉活动。根据甲状舌骨肌爆发与周期阶段的配置，识别出三种类型的吞咽。它们的区别在于爆发是否停留在开口阶段；是否在开口阶段持续到关闭阶段；以及是否在关闭阶段开始并在开口阶段结束。这三种类型的出现频率分别为66%、20%和14%。无论吞咽何时发生，吞咽周期中开口阶段的持续时间和下颌开口肌肉中的爆发持续时间都比舔舐周期中的长。然而，甲状舌骨肌爆发对关闭阶段的持续时间影响较小。结果表明，在舔舐和吞咽过程中，二腹肌可能主要作为与下颌开口相关的肌肉起作用，而颏舌骨肌可能既作为与下颌开口相关的肌肉，又作为与吞咽相关的肌肉起作用。
