Poster A11, Saturday, March 25, 5:00 – 7:00 pm, Pacific Concourse
The Children’s Brain Activation in Discriminating Faces along the Morphed Continuum of Happy and Fearful Expressions
Ming-Chun Lee1, SHIH-TSENG HUANG1; 1Department of Psychology and Center for research in Cognitive Science, National Chung-Cheng University, Taiwan
The study used morphed faces to investigate the perceptual advantage of between-categorical compared with within-categorical facial expressions. Twenty-nine participants including 15 males and 14 females (aged from 19-24) were recruited from a University of southern Taiwan. Three sets of male happy and fearful expressions were selected from the natural facial expressions of the Taiwanese standard emotional stimuli database. We then morphed the two kinds of emotions of each set into one hundred equal scaling combined facial expressions. Results found the peak amplitudes(PAs) of P120 and N170 of second faces were higher than those of the first faces on PO8. Children were found higher at PO7 and PO8. Adults, on the other hand, were higher of their P120, N170, P3, and LPP at the Fz, Cz and Pz. The mean amplitudes(MAs) at F4 than F3 of adults were found higher activation in the Between than in the Same and Within conditions. The difference of children and adults of brain activation in processing faces related to the developing ability in children especially in their emotional perceptual categorization.
Topic Area: EMOTION & SOCIAL: Development & aging