Effects of exposure to facial expression variation in face learning and recognition.

Liu, C., Chen, W. and Ward, J., 2015. Effects of exposure to facial expression variation in face learning and recognition. Psychological Research, 79 (6), 1042 - 1053.

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DOI: 10.1007/s00426-014-0627-8

Abstract

Facial expression is a major source of image variation in face images. Linking numerous expressions to the same face can be a huge challenge for face learning and recognition. It remains largely unknown what level of exposure to this image variation is critical for expression-invariant face recognition. We examined this issue in a recognition memory task, where the number of facial expressions of each face being exposed during a training session was manipulated. Faces were either trained with multiple expressions or a single expression, and they were later tested in either the same or different expressions. We found that recognition performance after learning three emotional expressions had no improvement over learning a single emotional expression (Experiments 1 and 2). However, learning three emotional expressions improved recognition compared to learning a single neutral expression (Experiment 3). These findings reveal both the limitation and the benefit of multiple exposures to variations of emotional expression in achieving expression-invariant face recognition. The transfer of expression training to a new type of expression is likely to depend on a relatively extensive level of training and a certain degree of variation across the types of expressions.

Item Type:Article
ISSN:0340-0727
Subjects:UNSPECIFIED
Group:Faculty of Science & Technology
ID Code:24072
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:20 Jun 2016 09:07
Last Modified:10 Aug 2016 10:32

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