title: Dynamic Emotional Faces Generalise Better to a New Expression but not to a New View.
abstract: Prior research based on static images has found limited improvement for recognising previously learnt faces in a new expression after several different facial expressions of these faces had been shown during the learning session. We investigated whether non-rigid motion of facial expression facilitates the learning process. In Experiment 1, participants remembered faces that were either presented in short video clips or still images. To assess the effect of exposure to expression variation, each face was either learnt through a single expression or three different expressions. Experiment 2 examined whether learning faces in video clips could generalise more effectively to a new view. The results show that faces learnt from video clips generalised effectively to a new expression with exposure to a single expression, whereas faces learnt from stills showed poorer generalisation with exposure to either single or three expressions. However, although superior recognition performance was demonstrated for faces learnt through video clips, dynamic facial expression did not create better transfer of learning to faces tested in a new view. The data thus fail to support the hypothesis that non-rigid motion enhances viewpoint invariance. These findings reveal both benefits and limitations of exposures to moving expressions for expression-invariant face recognition.
authors: Department of Psychology, Faculty of Science and Technology Bournemouth University, Talbot Campus Fern Barrow Poole, Dorset, BH12 5BB, United Kingdom.
authors: Chang Hong
authors: CH
authors: Liu
authors: State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing 100101, China.
authors: Wenfeng
authors: W
authors: Chen
authors: Department of Computer Science, University of Hull, Cottingham Road, Hull, HU6 7RX, United Kingdom.
authors: James
authors: J
authors: Ward
authors: Department of Psychology, Graduate School of Literature and Social Science Nihon University, 3-25-40, Setagaya-ku, Sakurajosui Tokyo 156-8550, Japan.
authors: Nozomi
authors: N
authors: Takahashi
mesh_terms: D000328:Adult; D004644:Emotions; D005149:Facial Expression; D000066499:Facial Recognition; D005260:Female; D006801:Humans; D007858:Learning; D008297:Male; D021641:Recognition, Psychology; D055815:Young Adult