Op-scan130122 1346..1351
نویسندگان
چکیده
The effect of social rejection on cardiac and brain responses was examined in a study in which participants had to decide on the basis of pictures of virtual peers whether these peers would like them or not. Physiological and behavioral responses to expected and unexpected acceptance and rejection were compared. It was found that participants expected that about 50% of the virtual judges gave them a positive judgment. Cardiac deceleration was strongest for unexpected social rejection. In contrast, the brain response was strongest to expected acceptance and was characterized by a positive deflection peaking around 325ms following stimulus onset and the observed difference was maximal at fronto-central positions. The cardiac and electrocortical responses were not related. It is hypothesized that these differential response patterns might be related to earlier described differential involvement of the dorsal and ventral portion of the anterior cingulate cortex.
منابع مشابه
علل و اسباب بروز انشعاب و فروپاشی گروه حزب‌الله (1346-1351 هـ.ش)
اهمیت شناخت و واکاوی جریان‌ها و گروه‌های معارضِ با حکومت پهلوی در مطالعات تاریخ انقلاب ایران غیر قابل انکار است. پژوهش حاضر درصدد است به شناسایی گروهی اسلام‌گرا با مشی مبارزۀ مسلحانه بهنام «گروه حزب‌الله» با تمرکز بر فرآیند «انشعاب» این گروه، بهعنوان مهم‌ترین عامل مؤثر در فروپاشی آن بپردازد، عاملی که پیشینۀ پژوهش موجود، آن را مسکوت گذاشته و یا در تحلیل آن به خطا رفته است. پژوهش حاضر با روشی ...
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