کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4320193 1290853 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Different modalities of painful somatosensory stimulations affect anticipatory cortical processes: A high-resolution EEG study
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
Different modalities of painful somatosensory stimulations affect anticipatory cortical processes: A high-resolution EEG study
چکیده انگلیسی
After each stimulus, the subject reported the perceived stimulus intensity. Surface Laplacian estimation of the EEG data spatially enhanced the anticipatory stimulus-preceding negativity (SPN), which reflects motivational relevance of the stimulus. Subjects perceived no difference in the intensity of the electrical versus laser stimuli in both painful and nonpainful conditions. However, the anticipatory SPN appeared over large scalp regions before painful laser but not electrical stimulation. The same was true for the nonpainful stimulations. The present results suggest that the motivational anticipatory cortical processes are induced by nonpainful and painful biologically/ecologically relevant laser stimuli rather than by “artificial” electrical stimuli with similar intensity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research Bulletin - Volume 71, Issue 5, 15 March 2007, Pages 475-484
نویسندگان
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