Publications

@article{Schupp2004,
title = {The facilitated processing of threatening faces: An ERP analysis.},
author = {H T Schupp and A \"{O}hman and M Jungh\"{o}fer and A I Weike and J Stockburger and A O Hamm},
doi = {10.1037/1528-3542.4.2.189},
issn = {1931-1516},
year = {2004},
date = {2004-01-01},
journal = {Emotion},
volume = {4},
number = {2},
pages = {189--200},
abstract = {Threatening, friendly, and neutral faces were presented to test the hypothesis of the facilitated perceptual processing of threatening faces. Dense sensor event-related brain potentials were measured while subjects viewed facial stimuli. Subjects had no explicit task for emotional categorization of the faces. Assessing early perceptual stimulus processing, threatening faces elicited an early posterior negativity compared with nonthreatening neutral or friendly expressions. Moreover, at later stages of stimulus processing, facial threat also elicited augmented late positive potentials relative to the other facial expressions, indicating the more elaborate perceptual analysis of these stimuli. Taken together, these data demonstrate the facilitated perceptual processing of threatening faces. Results are discussed within the context of an evolved module of fear (A. Ohman & S. Mineka, 2001).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Carlsson2004,
title = {Fear and the amygdala: Manipulation of awareness generates differential cerebral responses to phobic and fear-relevant (but nonfeared) stimuli},
author = {K Carlsson and K M Petersson and D Lundqvist and A Karlsson and M Ingvar and A \"{O}hman},
doi = {10.1037/1528-3542.4.4.340},
issn = {1931-1516},
year = {2004},
date = {2004-01-01},
journal = {Emotion},
volume = {4},
number = {4},
pages = {340--353},
abstract = {Rapid response to danger holds an evolutionary advantage. In this positron emission tomography study, phobics were exposed to masked visual stimuli with timings that either allowed awareness or not of either phobic, fear-relevant (e.g., spiders to snake phobics), or neutral images. When the timing did not permit awareness, the amygdala responded to both phobic and fear-relevant stimuli. With time for more elaborate processing, phobic stimuli resulted in an addition of an affective processing network to the amygdala activity, whereas no activity was found in response to fear-relevant stimuli. Also, right prefrontal areas appeared deactivated, comparing aware phobic and fear-relevant conditions. Thus, a shift from top-down control to an affectively driven system optimized for speed was observed in phobic relative to fear-relevant aware processing.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}