Murray K A, Larson C R, Logemann J A
Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois 60208, USA.
Dysphagia. 1998 Summer;13(3):160-6. doi: 10.1007/PL00009567.
In this investigation, surface electromyographic (EMG) recordings were used to make qualitative and quantitative analyses of labial muscle activity during three swallowing tasks, incorporating the use of various drinking implements. EMG was recorded from four quadrants of the perioral region and from the submental muscle complex in 11 normal adult females. Swallowing tasks included liquid extraction from a spoon, a straw, and a cup and posterior bolus propulsion of a 5 ml, thin liquid. Average EMG values obtained during a maximal lip compression task were used to normalize labial muscle responses for each subject thus allowing between-subject comparisons. Variable activity patterns were noted in the perioral muscles once the lips were contacted by a drinking implement. Subjects used a greater percentage of maximal labial muscle activity to remove liquid from an implement than to swallow the liquid. A greater level of EMG was recorded in the lips during straw usage as compared with spoon or cup usage. Significant intrasubject and intersubject variability in labial function occurred during liquid removal using a drinking implement and during the oral swallow in these normal subjects.
在本研究中，表面肌电图（EMG）记录用于对三项吞咽任务期间唇部肌肉活动进行定性和定量分析，这些任务包括使用各种饮水器具。在11名正常成年女性中，从口周区域的四个象限和颏下肌肉复合体记录EMG。吞咽任务包括从勺子、吸管和杯子中吸取液体，以及对5毫升稀液体进行团块向后推进吞咽。在最大唇部压缩任务期间获得的平均EMG值用于对每个受试者的唇部肌肉反应进行标准化，从而实现受试者间的比较。一旦唇部接触到饮水器具，口周肌肉就会出现不同的活动模式。与吞咽液体相比，受试者使用更大比例的最大唇部肌肉活动来从器具中去除液体。与使用勺子或杯子相比，使用吸管时唇部记录到的EMG水平更高。在这些正常受试者使用饮水器具去除液体期间以及口腔吞咽期间，唇部功能存在显著的受试者内和受试者间变异性。
