在不同的骨科疼痛强度期间,马匹面部表情的变化
Katrina Ask1, Marie Rhodin2, Maheen Rashid-Engström3
1Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden. katrina.ask@slu.se.
Scientific reports
|January 3, 2024
概括
研究人员在诱导的骨科疼痛期间绘制了马的面部表情. 耳朵和眼睛运动的关键变化以及下唇的位置表明疼痛,特别是在从没有疼痛过渡到轻度疼痛时.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物行为 动物行为
- 疼痛研究 疼痛研究
背景情况:
- 面部表情是马匹疼痛的已知指标.
- 然而,缺少整形疼痛期间面部活动的全面描述.
研究的目的:
- 详尽地绘制休息马体面活动的变化,这些马体会诱导的骨科疼痛.
- 识别与不同疼痛水平相关的特定面部动作单元.
主要方法:
- 八匹马通过注射脂聚糖化物 (LPS) 诱导轻度至中度的骨科疼痛.
- 使用步态分析客观地测量.
- 在休息期间,使用EquiFACS系统精心记录和分析面部活动.
主要成果:
- 预测建模确定了16个相关的面部动作单元和描述符.
- 特定的动作,如下唇抑郁 (AU16),唇分开 (AU25) 和耳朵运动 (SEAD101,SEAD104) 与疼痛显著增加.
- 最实质性的面部活动变化发生在没有疼痛和轻度疼痛状态之间.
结论:
- 休息的马表现出动态的上下面部表情,以应对骨科疼痛.
- 疼痛强度和特定的面部活动之间的关系是复杂的,需要进一步研究.
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