Horndasch Stefanie, Sharon Elisabeth, Eichler Anna, Graap Holmer, Moll Gunther H, Kratz Oliver
Department of Child and Adolescent Mental Health, University of Erlangen-Nuremberg, 91054 Erlangen, Germany.
Department of Psychosomatic Medicine and Psychotherapy, University of Erlangen-Nuremberg, 91054 Erlangen, Germany.
Behav Sci (Basel). 2023 Mar 2;13(3):215. doi: 10.3390/bs13030215.
In anorexia nervosa, aberrant emotional reactions toward body stimuli have been discussed. We investigated heart rate as a physiological marker when viewing body stimuli and hypothesized altered HR reactions toward those highly significant and emotional stimuli in anorexia nervosa. In total, 37 anorexia nervosa patients and 43 control participants viewed pictures of women of five different weight categories, while their cardiac activity was recorded. R-R intervals following picture onset were determined, and means were calculated for three distinct time periods. The overall change in HR relative to baseline across all picture categories was greater in the patient group than in the control group (significant effect of "group", = 0.002, partial η = 0.120). A significant decrease in HR 2 to 8 s after picture presentation was found for pictures of women of extreme weight in both participant groups (significant "category ∗ time segment interaction", = 0.01, partial η = 0.037) and correlated with scores of sociocultural attitudes toward the appearance for the extremely underweight category (r = -0.33, = 0.005). Therefore, differential HR reactions for anorexia nervosa patients and control participants were found for body stimuli in general. The highest HR decelerations in response to pictures of strongly underweight and overweight women may reflect emotional processes such as anxiety due to social comparison.
在神经性厌食症中，人们已经讨论了对身体刺激的异常情绪反应。我们研究了观看身体刺激时作为生理指标的心率，并假设神经性厌食症患者对那些高度显著且情绪化的刺激会有改变的心率反应。共有37名神经性厌食症患者和43名对照参与者观看了五个不同体重类别的女性图片，同时记录他们的心脏活动。确定图片出现后的R-R间期，并计算三个不同时间段的平均值。患者组中所有图片类别相对于基线的心率总体变化大于对照组（“组”的显著效应， = 0.002，偏η = 0.120）。在两个参与者组中，对于极端体重女性的图片，在图片呈现后2至8秒发现心率显著下降（显著的“类别*时间段交互作用”， = 0.01，偏η = 0.037），并且与对极端体重过轻类别的外貌的社会文化态度得分相关（r = -0.33， = 0.005）。因此，总体上发现神经性厌食症患者和对照参与者对身体刺激有不同的心率反应。对体重过轻和超重女性图片的最高心率减速可能反映了诸如社会比较引起的焦虑等情绪过程。
