کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6262337 1292351 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research reportActivation of the prefrontal cortex by unilateral transcranial direct current stimulation leads to an asymmetrical effect on risk preference in frames of gain and loss
ترجمه فارسی عنوان
گزارش تحقیقاتی ایجاد قشر پیشانی با تحریک جریان مستقیم ترانس کرانانی یک طرفه منجر به تاثیر نامتقارن بر ترجیح ریسک در فرایندهای سود و زیان
کلمات کلیدی
قشر پیشانی غدد درون رحم، قاب را بدست آورید قاب تخریب، ترجیح ریسک، تحریک جریان مستقیم ترانس کرانانی یکطرفه،
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی


- DLPFC had hemispheric asymmetry regarding the effect on risk preference.
- Right DLPFC had frame-dependently asymmetric effect on risk preference.
- Anodal tDCS on right DLPFC decreased the degree of risk aversion in gain frame.
- Anodal tDCS on right DLPFC increased the degree of risk aversion in loss frame.

Previous brain imaging and brain stimulation studies have suggested that the dorsolateral prefrontal cortex may be critical in regulating risk-taking behavior, although its specific causal effect on people's risk preference remains controversial. This paper studied the independent modulation of the activity of the right and left dorsolateral prefrontal cortex using various configurations of transcranial direct current stimulation. We designed a risk-measurement table and adopted a within-subject design to compare the same participant's risk preference before and after unilateral stimulation when presented with different frames of gain and loss. The results confirmed a hemispheric asymmetry and indicated that the right dorsolateral prefrontal cortex has an asymmetric effect on risk preference regarding frames of gain and loss. Enhancing the activity of the right dorsolateral prefrontal cortex significantly decreased the participants' degree of risk aversion in the gain frame, whereas it increased the participants' degree of risk aversion in the loss frame. Our findings provide important information regarding the impact of transcranial direct current stimulation on the risk preference of healthy participants. The effects observed in our experiment compared with those of previous studies provide further evidence of the effects of hemispheric and frame-dependent asymmetry. These findings may be helpful in understanding the neural basis of risk preference in humans, especially when faced with decisions involving possible gain or loss relative to the status quo.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1648, Part A, 1 October 2016, Pages 325-332
نویسندگان
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