Following Lu et al., we extracted the entire BOLD time-series response to the first disgusting picture.
Think of something disgusting or a disgusting picture of a ugly person with armpits and when you meet the nurse think of all these things together in a sandwich a rotten egg sandwich and all these things.
Sure, it might have some kind of first effect, but you don't really say very much at the end of the day other than, "this is a disgusting picture that I took".
Much of Ms Trott's personal blog, VoxTrott, is devoted to images of her beloved dog Maddy, while Mr Trott, a dilettante cook, likes to post "disgusting pictures of good food" on his blog.
And sometimes those over-tasked social media managers use their work computers to share gross pictures with their friends, and forget that they have those disgusting pictures saved on their clipboard.
In this task, subjects viewed disgusting or neutral images, taken from the International Affective Picture System (Lang et al. 2008); disgusting pictures included moldy food, humans with unsightly skin conditions, rotten teeth, and so on.
Although our results suggest that disgusting pictures evoke very different emotional processing in conservatives and liberals, it will take a range of targeted studies in the future to tease apart the separate contribution of each brain circuit.
However, with respect to the electrocortical activity, there was no significant difference in response to disgust pictures between the first and the second EEG session.
Participants of the therapy group showed a significant reduction in experienced arousal (t(14) = 2.9, p = .011) and disgust (t(14) = 4.4, p < .001) in response to disgust pictures from session 1 to session 2, whereas there was no change in the other affective ratings of disgust pictures (all p > .132).132
In a previous study we were also able to show heightened overall disgust-proneness in spider phobic children relative to controls (Leutgeb et al., 2010) which was accompanied by heightened average facial electromyographic activity of the levator labii and the corrugator supercilii in response to spider and disgust pictures.
The therapy group showed a reduction of P300 amplitudes from session 1 to session 2 in response to disgust pictures (t(14) = 2.4, p = .034) and neutral pictures (t(14) = 2.2, p = .049), while there were no changes in P300 amplitudes from session 1 to session 2 in response to the other picture categories (all p > .331).331
