کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4343344 1615097 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensitivity of frontal beta oscillations to reward valence but not probability
ترجمه فارسی عنوان
حساسیت نوسانات بتای پیشانی به منظور جلب اعتماد، اما نه احتمال
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی


• Rewards elicit beta power over frontal areas of the scalp.
• We showed that beta power was mainly sensitive to feedback valence.
• We showed that beta power was not sensitive to feedback probability.
• Beta cannot index a reward prediction error.
• Beta might relate to a different reward processing function.

Reward feedback elicits a brief increase in power in the high-beta frequency range of the human electroencephalogram (EEG) over frontal areas of the scalp, but the functional role of this oscillatory activity remains unclear. An observed sensitivity to reward expectation (HajiHosseini, Rodríguez-Fornells, and Marco-Pallarés, 2012; [2]) suggests that reward-related beta may index a reward prediction error (RPE) signal for reinforcement learning. To investigate this possibility we reanalyzed EEG data from two prior experiments that revealed RPEs in the human event-related brain potential (Holroyd and Krigolson, 2007 [12]; Holroydet al., 2008 [13]). We found that feedback stimuli that indicated reward, when compared to feedback stimuli that indicated no-reward, elicited relatively more beta power (20–30 Hz) over a frontal area of the scalp. However, beta power was not sensitive to feedback probability. These results indicate that reward-related beta does not index an RPE but rather relates to a different reward processing function.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 602, 18 August 2015, Pages 99–103
نویسندگان
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