Reimers-Neils L, Logemann J, Larson C
Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois 60208-3540.
Dysphagia. 1994 Spring;9(2):101-6. doi: 10.1007/BF00714596.
This study investigated the effects of six consistencies on measures of swallow duration, muscle activity, and sound. Electromyographic (EMG) recordings of the submental and infrahyoid muscle complexes, and audio recordings of neck sounds were made while 5 normal subjects swallowed two foods in each of three consistency categories: liquid, thin paste, and thick paste. Total swallow duration, measured from EMG, increased significantly across consistency categories from liquids to thin pastes to thick pastes. Liquids and thin pastes were significantly different from thick pastes on all but one EMG measure. However, liquids and thin pastes failed to reach significance on any of the EMG measures. EMG activity in the submental muscles most often initiated the swallow whereas the infrahyoid muscle activity most frequently terminated the swallow. A sound spike occurred at relatively the same time in each swallow. Results are discussed in terms of systematic modulations of muscle activity during swallow.
本研究调查了六种黏稠度对吞咽持续时间、肌肉活动和声音测量的影响。在5名正常受试者吞咽三种黏稠度类别（液体、稀糊和稠糊）中的每一种的两种食物时，进行了颏下和舌骨下肌肉复合体的肌电图（EMG）记录以及颈部声音的音频记录。从EMG测量的总吞咽持续时间，在从液体到稀糊再到稠糊的黏稠度类别中显著增加。除一项EMG测量外，液体和稀糊在所有EMG测量上与稠糊均有显著差异。然而，液体和稀糊在任何EMG测量上均未达到显著差异。颏下肌肉的EMG活动最常启动吞咽，而舌骨下肌肉活动最常终止吞咽。在每次吞咽中，声音峰值出现在相对相同的时间。根据吞咽过程中肌肉活动的系统调节对结果进行了讨论。
