کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7318514 | 1475563 | 2016 | 71 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Willing to wait: Elevated reward-processing EEG activity associated with a greater preference for larger-but-delayed rewards
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
HEOGVEOGFrontal midline thetacatechol-O-methyltransferase geneFMTERSPFRNITIIQRFDRPCA - PCAVentral striatum - Striatum درشتevent-related spectral perturbation - اختلال طیفی مربوط به رویدادElectroencephalogram - الکتروانسفالوگرافیPrinciple component analysis - تجزیه و تحلیل اجزای اصلanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceDelay discounting - تخفیف تاخیرfMRI - تصویرسازی تشدید مغناطیسی کارکردیfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیinter-trial interval - فاصله بین محاکمهinter-quartile range - محدوده بین محوریfeedback-related negativity - منفی مربوط به بازخوردfalse discovery rate - میزان کشف کاذبEEG - نوار مغزیCOMT gene - ژن COMTMonetary incentive delay task - کار تأخیر انگیز مالی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
While almost everyone discounts the value of future rewards over immediate rewards, people differ in their so-called delay-discounting. One of the several factors that may explain individual differences in delay-discounting is reward-processing. To study individual-differences in reward-processing, however, one needs to consider the heterogeneity of neural-activity at each reward-processing stage. Here using EEG, we separated reward-related neural activity into distinct reward-anticipation and reward-outcome stages using time-frequency characteristics. Thirty-seven individuals first completed a behavioral delay-discounting task. Then reward-processing EEG activity was assessed using a separate reward-learning task, called a reward time-estimation task. During this EEG task, participants were instructed to estimate time duration and were provided performance feedback on a trial-by-trial basis. Participants received monetary-reward for accurate-performance on Reward trials, but not on No-Reward trials. Reward trials, relative to No-Reward trials, enhanced EEG activity during both reward-anticipation (including, cued-locked delta power during cue-evaluation and pre-feedback alpha suppression during feedback-anticipation) and reward-outcome (including, feedback-locked delta, theta and beta power) stages. Moreover, all of these EEG indices correlated with behavioral performance in the time-estimation task, suggesting their essential roles in learning and adjusting performance to maximize winnings in a reward-learning situation. Importantly, enhanced EEG power during Reward trials, as reflected by stronger 1) pre-feedback alpha suppression, 2) feedback-locked theta and 3) feedback-locked beta, was associated with a greater preference for larger-but-delayed rewards in a separate, behavioral delay-discounting task. Results highlight the association between a stronger preference toward larger-but-delayed rewards and enhanced reward-processing. Moreover, our reward-processing EEG indices detail the specific stages of reward-processing where these associations occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 91, October 2016, Pages 141-162
Journal: Neuropsychologia - Volume 91, October 2016, Pages 141-162
نویسندگان
Narun Pornpattananangkul, Robin Nusslock,