正常发笑是人类独特的、普遍存在的、由种种情绪状态引起的行为。它的生理学涉及面肌运动和节律性阵挛性膈肌运动的整合。其反应强度受刺激强度和时间以及环境因素的影响。病理性发笑与情绪刺激不协调,因而是不适切的、情不自禁的或不能控制的,可以在与任何可认知的刺激无关时出现,常常表现为对正常发笑的刻板性滑稽性模仿。发笑障碍最常用的病因学和病理学分类 Normal laughter is a unique, ubiquitous human behavior that is caused by emotional states. Its physiology involves the integration of facial muscle movements and rhythmic clonic diaphragmatic movements. The reaction intensity is affected by the intensity and time of stimulation as well as the environmental factors. Pathological amnesiacs are uncoordinated with mood stimuli and are therefore not desirable, inaccessible or uncontrollable, and may appear to be independent of any perceptible stimulus, often as a stereotypical parody of normal amusement. The most commonly used etiology and pathology classification of laughter disorders