Forghieri M, Monzani D, Mackinnon A, Ferrari S, Gherpelli C, Galeazzi G M
Section of Psychiatry, Department of Clinical, Diagnostic, and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy.
Section of ENT, Department of Clinical, Diagnostic, and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy.
Neurosci Lett. 2016 Aug 26;629:155-159. doi: 10.1016/j.neulet.2016.07.002. Epub 2016 Jul 7.
Human postural control is dependent on the central integration of vestibular, visual and proprioceptive inputs. Psychological states can affect balance control: anxiety, in particular, has been shown to influence balance mediated by visual stimuli. We hypothesized that patients with eating disorders would show postural destabilization when exposed to their image in a mirror and to the image of a fashion model representing their body ideal in comparison to body neutral stimuli. Seventeen females patients attending a day centre for the treatment of eating disorders were administered psychometric measures of body dissatisfaction, anxiety, depression and underwent posturographic measures with their eyes closed, open, watching a neutral stimulus, while exposed to a full length mirror and to an image of a fashion model corresponding to their body image. Results were compared to those obtained by eighteen healthy subjects. Eating disordered patients showed higher levels of body dissatisfaction and higher postural destabilization than controls, but this was limited to the conditions in which they were exposed to their mirror image or a fashion model image. Postural destabilization under these conditions correlated with measures of body dissatisfaction. In eating disordered patients, body related stimuli seem to act as phobic stimuli in the posturographic paradigm used. If confirmed, this has the potential to be developed for diagnostic and therapeutic purposes.
人类的姿势控制依赖于前庭、视觉和本体感觉输入的中枢整合。心理状态会影响平衡控制：特别是焦虑，已被证明会影响由视觉刺激介导的平衡。我们假设，与身体中性刺激相比，饮食失调患者在镜子中看到自己的形象以及代表其理想身材的时尚模特形象时，会出现姿势不稳定。对17名在日间治疗中心接受饮食失调治疗的女性患者进行了身体不满、焦虑、抑郁的心理测量，并在她们闭眼、睁眼、观看中性刺激、面对全身镜以及看到与她们身体形象相符的时尚模特形象时进行了姿势描记测量。将结果与18名健康受试者的结果进行比较。饮食失调患者比对照组表现出更高程度的身体不满和更高的姿势不稳定，但这仅限于他们面对自己的镜像或时尚模特形象的情况。在这些情况下的姿势不稳定与身体不满的测量结果相关。在饮食失调患者中，与身体相关的刺激在所用的姿势描记范式中似乎起到了恐惧刺激的作用。如果得到证实，这有可能用于诊断和治疗目的。
