Supplementary Figure 4: ER-EDA during Stroop
From: Altered responses to social chemosignals in autism spectrum disorder
The Stroop task contained only one trial, and was thus not optimized for this analysis. Nevertheless, we observe a trend very similar to that seen in the Faces task, whereby the smell of fear increased arousal in TD but decreased it in ASD. An ANOVA applied to the EDA trace obtained over the ~40 sec task revealed no main effect (all F1,33 < 0.3, all p > 0.6), yet near significant interaction (F1,33 = 4.0, p = 0.054). This reflected that exposure to the smell of fear relative to control non- significantly increased EDA in TD (normalized Trough to Peak, Control = 0.94 ± 0.38 Nμs, Fear = 1.17 ± 0.40 Nμs, t(19) =1.6 p = 0.12) yet exposure to the smell of fear relative to control non- significantly decreased EDA in ASD (normalized Trough to peak, Control = 1.15 ± 0.48 Nμs, Fear = 0.89 ± 0.47 Nμs, t(14) = 1.3, p = 0.24). All tests were two-tailed, all centers reflect mean, all error bars reflect SEM.
