掌颏反射也可见于正常成人,但与病理性的掌颏反射表现不同。作者曾对急性脑卒中患者掌颏反射阳性者,按反射强度划分为+～(?),进行动态观察,发现对病灶定位和预后判断有参考价值。为了进一步研究掌颏反射,作者在参加北京城区老年流行病学调查 Palm chin reflex can also be found in normal adults, but with pathological chin chin reflex performance. The authors have acute palmar strokes in patients with positive reflex, according to the intensity of reflex is divided into + ~ (?), The dynamic observation found that the location of the lesion and the prognosis of a reference value. In order to further study the palm chin reflex, the author participated in the investigation of Beijing urban elderly epidemiology