Department of Biological and Clinical Psychology, University of Greifswald, Greifswald, Germany.
Psychophysiology. 2011 Jun;48(6):745-54. doi: 10.1111/j.1469-8986.2010.01150.x. Epub 2010 Nov 12.
To study defensive mobilization elicited by the exposure to interoceptive arousal sensations, we exposed highly anxiety sensitive students to a symptom provocation task. Symptom reports, autonomic arousal, and the startle eyeblink response were monitored during guided hyperventilation and a recovery period in 26 highly anxiety sensitive persons and 22 controls. Normoventilation was used as a non-provocative comparison condition. Hyperventilation led to autonomic arousal and a marked increase in somatic symptoms. While high and low anxiety sensitive persons did not differ in their defensive activation during hyperventilation, group differences were detected during early recovery. Highly anxiety sensitive students exhibited a potentiation of startle response magnitudes and increased autonomic arousal after hyper- as compared to after normoventilation, indicating defensive mobilization evoked by the prolonged presence of feared somatic sensations.
为了研究暴露于内脏感觉唤醒时所引发的防御性动员，我们让高度焦虑敏感的学生接受了一项症状诱发任务。在 26 名高度焦虑敏感的人和 22 名对照组中，在指导性过度通气和恢复期监测症状报告、自主唤醒和惊跳眨眼反应。正常通气被用作非诱发比较条件。过度通气导致自主唤醒和明显的躯体症状增加。虽然高和低焦虑敏感的人在过度通气期间的防御性激活没有差异，但在早期恢复期间检测到了组间差异。与正常通气相比，高度焦虑敏感的学生在过度通气后表现出更大的惊跳反应幅度和更高的自主唤醒，表明在长时间存在恐惧的躯体感觉时会引发防御性动员。
