精神分裂症患者面部情绪表达的维度信息论测量。

IF 3.6 Q1 PSYCHIATRY
Schizophrenia Research and Treatment Pub Date : 2014-01-01 Epub Date: 2014-02-25 DOI:10.1155/2014/243907
Jihun Hamm, Amy Pinkham, Ruben C Gur, Ragini Verma, Christian G Kohler
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引用次数: 18

摘要

情绪的面部表情改变是精神分裂症的特征性损伤。情感的评级传统上仅限于临床评定量表和面部肌肉运动分析,这需要大量的训练,并有基于方法论和生态有效性的局限性。为了提高对动态面部表情变化的可靠评估,我们基于面部表情的模糊性和独特性的信息理论测量开发了面部情绪表情的自动测量。这些测量在精神分裂症患者(n = 28)和健康对照(n = 26)的匹配组中进行了检查,他们接受了视频采集,以评估在诱发条件下基本情绪(快乐、悲伤、愤怒、恐惧和厌恶)的表达能力。精神分裂症患者在模糊性上得分更高,这是对单一情绪表达中的条件熵的衡量,而他们在特殊性上得分较低,这是对不同情绪表达中的相互信息的衡量。与基于观察员的评分相比,自动测量更有利。该方法可用于描述健康和临床人群的动态情绪表达。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dimensional information-theoretic measurement of facial emotion expressions in schizophrenia.

Dimensional information-theoretic measurement of facial emotion expressions in schizophrenia.

Dimensional information-theoretic measurement of facial emotion expressions in schizophrenia.

Dimensional information-theoretic measurement of facial emotion expressions in schizophrenia.

Altered facial expressions of emotions are characteristic impairments in schizophrenia. Ratings of affect have traditionally been limited to clinical rating scales and facial muscle movement analysis, which require extensive training and have limitations based on methodology and ecological validity. To improve reliable assessment of dynamic facial expression changes, we have developed automated measurements of facial emotion expressions based on information-theoretic measures of expressivity of ambiguity and distinctiveness of facial expressions. These measures were examined in matched groups of persons with schizophrenia (n = 28) and healthy controls (n = 26) who underwent video acquisition to assess expressivity of basic emotions (happiness, sadness, anger, fear, and disgust) in evoked conditions. Persons with schizophrenia scored higher on ambiguity, the measure of conditional entropy within the expression of a single emotion, and they scored lower on distinctiveness, the measure of mutual information across expressions of different emotions. The automated measures compared favorably with observer-based ratings. This method can be applied for delineating dynamic emotional expressivity in healthy and clinical populations.

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来源期刊
CiteScore
4.60
自引率
0.00%
发文量
2
审稿时长
14 weeks
期刊介绍: Schizophrenia Research and Treatment is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to all aspects of schizophrenia.
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