Figure 2.

Emotion detection. (a) Mean proportion correct for emotion detection for upright faces with three expressions as a function of stimulus duration. Observers detected emotion better with happy expressions than with fearful or angry expressions. (b) Mean proportion correct for emotion detection for inverted faces with three expressions as a function of stimulus duration. Inversion did not impair emotion detection compared with when faces were upright. Error bars for both panels indicate ±1 SEM (adjusted for within-observer comparisons).