Thu, 21 Aug 2008 07:09:47 BST CiteULike: jeep's Li http://www.citeulike.org/user/jeep/author/Li CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/jeep/article/1683858 <i>Percept Mot Skills, Vol. 104, No. 3 Pt 2. (June 2007), pp. 1097-1106.</i><br /><br />Previous research suggested that individuals with high trait anxiety have difficulties disengaging their attention from threatening cues, whereas those with low trait anxiety have no such attentional bias. However, according to some cognitive models of threat-related attention, low anxious people should show the same pattern as high anxious people when the threat value is large enough. To test this hypothesis, extremely threatening pictures were used as predictive location cues in a cue-target task. Neutral pictures were included as controls. 15 High Anxious participants and 17 Low Anxious participants were selected from 213 volunteers who all were police veterans. Analysis showed that threat cues produced greater facilitation effects than neutral cues, but this was not modulated by anxiety. This suggests that both high and low anxious individuals may have difficulties disengaging their attention from threat-cued locations when the threat value is large enough. Attention to threat in high and low trait-anxious individuals: a study using extremely threatening pictorial cues. X Li M Wang E Poliakoff YJ Luo Percept Mot Skills, Vol. 104, No. 3 Pt 2. (June 2007), pp. 1097-1106. 2007-09-22T01:38:23-00:00 2007 Percept Mot Skills 0031-5125 104 3 Pt 2 1097 1106 anxiety attentional-bias picture trait-anxiety http://www.citeulike.org/user/jeep/article/1299832 <i>Emotion, Vol. 1, No. 2. (June 2001), pp. 137-147.</i><br /><br />Face-emotion processing has shown signs of developmental change during adolescence. Functional magnetic resonance imaging (fMRI) was used on 10 adolescents and 10 adults to contrast brain regions engaged by a masked emotional-face task (viewing a fixation cross and a series of masked happy and masked fearful faces), while blood oxygen level dependent signal was monitored by a 1.5-T MRI scanner. Brain regions differentially engaged in the 2 age groups were mapped by using statistical parametric mapping. Summed across groups, the contrast of masked face versus fixation-cross viewing generated activations in occipital-temporal regions previously activated in passive face-viewing tasks. Adolescents showed higher maxima for activations in posterior association cortex for 3 of the 4 statistical contrasts. Adolescents and adults differed in the degree to which posterior hemisphere brain areas were engaged by viewing masked facial displays of emotion. Cortical brain regions engaged by masked emotional faces in adolescents and adults: an fMRI study. DS Pine J Grun E Zarahn A Fyer V Koda W Li PR Szeszko B Ardekani RM Bilder Emotion, Vol. 1, No. 2. (June 2001), pp. 137-147. 2007-05-16T10:53:52-00:00 2001 Emotion 1528-3542 1 2 137 147 emotion expression face fmri masked