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首页> 外文期刊>The Open Neurology Journal >Patterns of Sympathetic Responses Induced by Different Stress Tasks
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Patterns of Sympathetic Responses Induced by Different Stress Tasks

机译：不同压力任务引起的交感反应模式

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Stress tasks are used to induce sympathetic nervous system (SNS) arousal. However, the efficacy and the patterns of SNS activation have not been systematically compared between different tasks. Therefore, we analyzed SNS activation during the following stress tasks: Presentation of negative, positive, and – as a control – neutral affective pictures, Color-Word interference test (CWT), mental arithmetic under time limit, singing a song aloud, and giving a spontaneous talk. We examined 11 healthy subjects and recorded the following SNS parameters: Activation of emotional sweating by quantitative sudometry, skin vasoconstriction by laser-Doppler flowmetry, heart rate by ECG, blood pressure by determination of pulse wave transit time (PWTT), and electromyographic (EMG) activity of the trapezius muscle. Moreover, subjective stress ratings were acquired for each task using a visual analog scale. All tasks were felt significantly stressful when compared to viewing neutral pictures. However, SNS activation was not reliable: Affective pictures did not induce a significant SNS response; singing, giving a talk and mental arithmetic selectively increased heart rate and emotional sweating. Only the CWT globally activated the SNS. Regarding all tasks, induction of emotional sweating, increase of heart rate and blood pressure significantly correlated with subjective stress ratings, in contrast to EMG and skin vasoconstriction.Our results show that the activation of the SNS widely varies depending on the stress task. Different stress tasks differently activate the SNS, which is an important finding when considering sympathetic reactions - in clinical situations and in research.
机译：压力任务用于诱发交感神经系统（SNS）唤醒。但是，尚未系统比较不同任务之间SNS激活的功效和模式。因此，我们在以下压力任务中分析了SNS的激活：呈现负面，正面和（作为对照）中性情感图片，色词干扰测试（CWT），限时思维算术，大声唱歌和给予自发的讲话。我们检查了11名健康受试者，并记录了以下SNS参数：通过定量超声测量激活出汗，通过激光多普勒血流仪测量皮肤血​​管收缩，通过心电图测定心率，通过确定脉搏波传播时间（PWTT）测血压和进行肌电图检查）斜方肌的活动。此外，使用视觉模拟量表为每个任务获取主观压力等级。与查看中性图片相比，所有任务的压力都很大。但是，SNS激活并不可靠：情感图片没有引起明显的SNS响应;唱歌，说话和进行心理算术有选择地增加心率和情绪出汗。仅CWT全局激活了SNS。关于所有任务，与EMG和皮肤血管收缩相反，情绪出汗的诱导，心率和血压的升高与主观压力等级显着相关。我们的结果表明，SNS的激活随压力任务而变化很大。不同的压力任务会不同地激活SNS，这在考虑交感神经反应时（在临床情况和研究中）是一个重要发现。

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