کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6273593 | 1614799 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The timing and directional connectivity of human frontoparietal and ventral visual attention networks in emotional scene perception
ترجمه فارسی عنوان
اتصال زمانبندی و هدایت شبکههای جسورانه و چشمگیر انسان در حوزه تصورات عاطفی
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کلمات کلیدی
ROIIAPSFEFfusiform gyrus - gusiro fusiformiPS - IPSScene perception - ادراک صحنهHuman - انسانanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of variancefunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیfMRI - تصویرسازی تشدید مغناطیسی کارکردیAttention - توجهfrontal eye fields - زمینه های چشم جلوintraparietal sulcus - سوزن داخل شکمInternational Affective Picture System - سیستم تصویر مؤثر بین المللیGranger causality - علیت گرنجرFrontoparietal - فوروپوریتالregion of interest - منطقه مورد نظرEmotion - هیجان
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
چکیده انگلیسی
Electrocortical and hemodynamic measures reliably identify enhanced activity in the ventral and dorsal visual cortices during the perception of emotionally arousing versus neutral images, an effect that may reflect directive feedback from the subcortical amygdala. However, other brain regions strongly modulate visual attention, such as frontal eye fields (FEF) and intraparietal sulcus (IPS). Here we employ rapid sampling of BOLD signal (4Â Hz) in the amygdala, fusiform gyrus (FG), FEF and IPS in 42 human participants as they viewed a series of emotional and neutral natural scene photographs balanced for luminosity and complexity, to test whether emotional discrimination is evident in dorsal structures prior to such discrimination in the amygdala and FG. Granger causality analyses were used to assess directional connectivity within dorsal and ventral networks. Results demonstrate emotionally-enhanced peak BOLD signal in the amygdala, FG, FEF, and IPS, with the onset of BOLD signal discrimination occurring between 2 and 3Â s after stimulus onset in ventral structures, and between 4 and 5Â s in FEF and IPS. Granger causality estimates yield stronger directional connectivity from IPS to FEF than the reverse in this emotional picture paradigm. Consistent with a reentrant perspective of emotional scene perception, greater directional connectivity was found from the amygdala to FG compared to the reverse. These data support a perspective in which the registration of emotional scene content is orchestrated by the amygdala and rostral inferotemporal visual cortex.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 277, 26 September 2014, Pages 229-238
Journal: Neuroscience - Volume 277, 26 September 2014, Pages 229-238
نویسندگان
D. Sabatinelli, D.W. Frank, T.J. Wanger, M. Dhamala, B.M. Adhikari, X. Li,