确定人工外观嘴唇感知的二维阈值。
Determining the 2-Dimensional Threshold for Perception of Artificial-Appearing Lips.
作者信息
Kim Sang W, Rousso Daniel E
机构信息
Natural Face Clinics, Syracuse, New York.
Rousso Facial Plastic Surgery Clinic, Birmingham, Alabama.
出版信息
JAMA Facial Plast Surg. 2017 Sep 1;19(5):392-398. doi: 10.1001/jamafacial.2017.0052.
IMPORTANCE
Recognizing the perceptual threshold for artificial-appearing lips is important to avoid an undesirable outcome of treatment.
OBJECTIVE
To characterize the quantitative measurements for the perceptual threshold of artificial- and unnatural-appearing lips.
DESIGN, SETTING, AND PARTICIPANTS: Photographs of a female model's lips were digitally altered incrementally in 5 sets of features (the upper lip, lower lip, upper and lower lips, and shape of the Cupid's bow). From December 1, 2013, to January 30, 2014, participants viewed the photographs in random sequence using an online survey and responded to 2 questionnaires after each photograph. The participants were prompted to respond whether each altered photograph of the lips appeared to have received any cosmetic treatment, and whether the lips looked attractive and natural or artificial and unnatural. The measurement of each lip at which 50% of the observers perceived the lips as being treated and 50% of the observers perceived the lips as being artificial was determined. The difference in these 2 measurements was defined as dTA50, which represents the threshold differential between the perception of treated lips and artificial lips for 50% of the observers.
MAIN OUTCOMES AND MEASURES
Survey responses of the participants to the appearance of the lips in the photographs.
RESULTS
A total of 98 participants (76 females and 22 males; mean age, 42 years) provided usable responses to the survey. Each area of the lips had a unique quantitative measurement at which the observers perceived the lips as being treated and artificial. Enhancement of the upper lip alone had a narrower margin for artificial appearance (dTA50, 0.9 mm) compared with enhancement of both the upper and lower lips (dTA50, 1.5 mm). Any alteration to the Cupid's bow resulted in the narrowest margin for artificial appearance (dTA50, 0.3 mm). The difference in the perceptual threshold between the age of the observers was the most significant for the upper lip.
CONCLUSIONS AND RELEVANCE
The perceptual threshold for treated and/or artificial appearance is unique for each area of the lips.
LEVEL OF EVIDENCE
NA.
重要性
认识到人工感明显的嘴唇的感知阈值对于避免不理想的治疗结果很重要。
目的
描述人工感和不自然感嘴唇的感知阈值的定量测量方法。
设计、地点和参与者：对一名女性模特嘴唇的照片进行数字处理，逐步改变5组特征（上唇、下唇、上下唇以及唇弓形状）。2013年12月1日至2014年1月30日，参与者通过在线调查以随机顺序查看照片，并在每张照片后回答两份问卷。参与者被要求回答每张修改后的嘴唇照片是否看起来接受过任何美容治疗，以及嘴唇看起来是有吸引力且自然还是人工且不自然。确定了50%的观察者认为嘴唇经过治疗且50%的观察者认为嘴唇是人工感的情况下，每个嘴唇的测量值。这两个测量值的差异定义为dTA50，它代表50%的观察者对经过治疗的嘴唇和人工感嘴唇的感知阈值差异。
主要结局和测量指标
参与者对照片中嘴唇外观的调查回复。
结果
共有98名参与者（76名女性和22名男性；平均年龄42岁）提供了可用的调查回复。嘴唇的每个区域都有独特的定量测量值，在该值时观察者会认为嘴唇经过治疗且具有人工感。仅上唇的增强与上下唇都增强相比，人工感外观的界限更窄（dTA50，0.9毫米）。唇弓的任何改变都会导致人工感外观的界限最窄（dTA50，0.3毫米）。观察者年龄之间的感知阈值差异在上唇方面最为显著。
结论和相关性
经过治疗和/或人工感外观的感知阈值在嘴唇的每个区域都是独特的。
证据水平
无。
Zotero 插件