Facial expressions are inherently dynamic cues that develop and change over time, unfolding their affective signal. Although facial dynamics are assumed important for emotion recognition, testing often involves intense and stereotypical expressions and little is known about the role of temporal information in the recognition of subtle, non-stereotypical expressions. In Experiment 1 we demonstrate that facial dynamics are critical for recognizing subtle and non-stereotypical facial expressions, but not for recognizing intense and stereotypical displays of emotion. In Experiment 2 we further examined whether the facilitative effect of motion can lead to improved emotion recognition in LG, an individual with developmental visual agnosia and prosopagnosia, who has poor emotion recognition when tested with static facial expressions. LG's emotion recognition improved when subtle, non-stereotypical faces were dynamic rather than static. However, compared to controls, his relative gain from temporal information was diminished. Furthermore, LG's eye-tracking data demonstrated atypical visual scanning of the dynamic faces, consisting of longer fixations and lower fixation rates for the dynamic-subtle facial expressions, comparing to the dynamic-intense facial expressions. We suggest that deciphering subtle dynamic expressions strongly relies on integrating broad facial regions across time, rather than focusing on local emotional cues, skills which are impaired in developmental visual agnosia.
|Original language||American English|
|Number of pages||10|
|State||Published - Aug 2018|
Bibliographical noteFunding Information:
This work was supported by an Israel Science Foundation [ISF 1140/13 ] grant, by an EU Career Integration Grant [EU-CIG 618597 ], and by a BSF grant ( 2013028 ) to Hillel Aviezer. Appendix A
This work was supported by an Israel Science Foundation [ISF 1140/13] grant, by an EU Career Integration Grant [EU-CIG 618597], and by a BSF grant (2013028) to Hillel Aviezer.
© 2018 Elsevier Ltd
- Developmental visual agnosia
- Eye movements
- Facial dynamics
- Subtle facial expressions