کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10465745 925738 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anxiety overrides the blocking effects of high perceptual load on amygdala reactivity to threat-related distractors
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Anxiety overrides the blocking effects of high perceptual load on amygdala reactivity to threat-related distractors
چکیده انگلیسی
Amygdala reactivity to threat-related distractor stimuli can be abolished in perceptually demanding contexts. Premised on the biological imperative to respond swiftly to threat, we demonstrate, however, that when participants are threatened by shock, greater amygdala responses to fearful compared to neutral distractor faces is preserved under conditions of high attentional demand. Lateral prefrontal cortices also showed selective responding to fearful distractor faces under these conditions, suggesting that threat-related distractor stimuli engaged attentional control mechanisms. We conclude that anxiety elicited by looming threat promotes neurocognitive processes that broaden attention and enhance sensitivity to potential danger cues, even when perceptual systems are taxed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 49, Issue 5, April 2011, Pages 1363-1368
نویسندگان
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