Intrinsic Laryngeal Muscle Activity in Response to Autonomic Nervous System Activation

被引:37
|
作者
Helou, Leah B. [1 ]
Wang, Wei [2 ]
Ashmore, Robin C. [2 ]
Rosen, Clark A. [3 ]
Abbott, Katherine Verdolini [1 ]
机构
[1] Univ Pittsburgh, Dept Commun Sci & Disorders, Pittsburgh, PA 15260 USA
[2] Univ Pittsburgh, Dept Phys Med & Rehabil, Pittsburgh, PA 15260 USA
[3] Univ Pittsburgh, Dept Otolaryngol, Pittsburgh, PA 15260 USA
来源
LARYNGOSCOPE | 2013年 / 123卷 / 11期
基金
美国国家卫生研究院;
关键词
Laryngeal electromyography; intrinsic laryngeal muscle activity; autonomic nervous system; cold pressor task; voice; TRAPEZIUS MUSCLE; STRESSORS; EMG; ELECTROMYOGRAPHY; STIMULATION; INNERVATION; INTEGRATION; DYSPHONIA; TASK;
D O I
10.1002/lary.24109
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Objectives/HypothesisTo determine whether the intrinsic laryngeal muscles exhibit a response to induced autonomic nervous system (ANS) activation, and to characterize responses that may occur. Study DesignProspective within-subjects study. MethodsA cold pressor (CP) task was used to trigger a whole-body ANS response in eight vocally normal adult females. Surface electromyography of the trapezius muscle and bipolar hook-wire electromyography of intrinsic laryngeal muscles, as well as cardiovascular measures of heart rate (HR) and blood pressure (systolic [SBP] and diastolic [DBP]), were used to characterize participants' response to CP exposure compared to at-rest baseline. ResultsCardiovascular response to the CP task was confirmed for subjects via HR or blood pressure measures. Post hoc Bonferroni analysis confirmed statistically significant increases in HR (P=.027), SBP (P<.001), and DBP (P<.001) during the CP task as compared to baseline. Concurrent increases in muscle activity were generally observed in trapezius, posterior cricoarytenoid, bilateral thyroarytenoid/lateral cricoarytenoid muscle complex, and bilateral cricothyroid muscles for each subject. Three individuals elected to repeat the CP task and displayed the same pattern of laryngeal response as observed in their first exposure. Results for repeated baseline measures obtained after the cessation of the CP task were compared to pre-CP baseline. Overall laryngeal activation remained even after the cardiovascular response was attenuated. ConclusionsResults are consistent with the suggestion that human laryngeal muscles exhibit an elevated level of activation concurrent with ANS activation, and endorse the putative link between laryngeal muscle tension and acute stress. Findings are replicable within a subset of three individuals. Level of Evidence4. Laryngoscope, 123:2756-2765, 2013
引用
收藏
页码:2756 / 2765
页数:10
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