A time sequential analysis of facial expressions using FACS and its perspectives. : Taking an analysis of facial expressions of anger and disgust

FACS ヲ モチイタ ヒョウジョウ ノ ジケイレツ ブンセキ ト ソノ テンボウ イカリ ト ケンオ ノ ヒョウジョウ ブンセキ ヲ レイ トシテ

タカハシ, ナオキ

Takahashi, Naoki

オオサカ ダイガク ダイガクイン ニンゲン カガク ケンキュウカ タイジン シャカイ シンリガク ケンキュウシツ

時系列

FACS

符号化

SST

facial expression

time sequential

encoding

FACS, invented by Ekman & Friesen, has been used in many studies and that enables to describe visible facial movement of humans. However, these studies uses still photographs instead of motion pictures. The present study was intended for utilizing motion pictures and comparing two facial expressions of emotion: anger and disgust. For that purpose, a time sequential analysis for each AU on the basis of FACS was used. As results indicated, the significant differences were found in latency and duration for some AUs between anger and disgust. Thus the differences between facial movements that compose two facial expressions became clear. In addition, by utilizing a time sequential model of each facial expression made by the author, the features of each facial expression of emotions became clearer and the importance of the time sequential analysis was verified. The possibility and usefulness of an analysis of facial expressions using the time sequential method, including an application for SST, was discussed.