Timing along the cardiac cycle modulates neural signals of reward-based learning
Timing along the cardiac cycle modulates neural signals of reward-based learning
复制标题
心动周期的时间调节基于奖励的学习的神经信号
DOI:
10.1101/2022.07.07.498947
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Fouragnan E
中科院分区:
文献类型:
--
作者:
Fouragnan E
Natural fluctuations in cardiac activity modulate brain activity associated with sensory stimuli, as well as perceptual decisions about low magnitude, near-threshold stimuli. However, little is known about the relationship between fluctuations in heart activity and other internal representations. Here we investigate whether the cardiac cycle relates to learning-related internal representations – absolute and signed prediction errors. We combined machine learning techniques with electroencephalography with both simple, direct indices of task performance and computational model-derived indices of learning. Our results demonstrate that just as people are more sensitive to low magnitude, near-threshold sensory stimuli in certain cardiac phases, so are they more sensitive to low magnitude absolute prediction errors in the same cycles. However, this occurs even when the low magnitude prediction errors are associated with clearly suprathreshold sensory events. In addition, participants exhibiting stronger differences in their prediction error representations between cardiac cycles exhibited higher learning rates and greater task accuracy.
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DOI:
10.1093/cercor/bhab391
发表时间:
2022-07-12
期刊:
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影响因子:
--
作者:
通讯作者:
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DOI:
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期刊:
bioRxiv
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