Remembering with gains and losses: effects of monetary reward and punishment on successful encoding activation of source memories.
Remembering with gains and losses: effects of monetary reward and punishment on successful encoding activation of source memories.
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DOI：
10.1093/cercor/bhs415
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发表时间：
2014-05
期刊：
影响因子：
--
通讯作者：
Kawashima R
中科院分区：
文献类型：
--
作者：
Shigemune Y;Tsukiura T;Kambara T;Kawashima R
获得奖励或避免惩罚的动机会强化学习行为。尽管奖励对情景记忆影响的神经机制已经得到证实，但很少有证据表明惩罚对情景记忆的影响。我们的功能性磁共振成像（fMRI）研究了金钱奖励和惩罚对源记忆编码过程中激活的影响。在编码过程中，参与者在三种条件下（奖励、惩罚和控制）记忆单词（项目）和呈现单词（来源）的位置。在检索过程中，参与者检索单词的项目记忆和源记忆，并根据他们的表现给予奖励或惩罚。用奖励或惩罚编码的源记忆比没有这样编码的源记忆更容易被记住。fMRI数据表明，腹侧被盖区、黑质和伏隔核的激活反映了奖励和惩罚的过程，而脑岛的激活则随惩罚呈线性增加。海马体和海马体旁皮层的激活预测了源记忆随后的检索成功。此外，这些奖励/惩罚相关区域与海马体之间的相关性是显著的。奖励和奖励可以增强源记忆的成功编码，奖励/惩罚相关区域和记忆相关区域之间的相互作用可以通过奖励和/或惩罚来增强记忆。
The motivation of getting rewards or avoiding punishments reinforces learning behaviors. Although the neural mechanisms underlying the effect of rewards on episodic memory have been demonstrated, there is little evidence of the effect of punishments on this memory. Our functional magnetic resonance imaging (fMRI) study investigated the effects of monetary rewards and punishments on activation during the encoding of source memories. During encoding, participants memorized words (item) and locations of presented words (source) under 3 conditions (Reward, Punishment, and Control). During retrieval, participants retrieved item and source memories of the words and were rewarded or penalized according to their performance. Source memories encoded with rewards or punishments were remembered better than those without such encoding. fMRI data demonstrated that the ventral tegmental area and substantia nigra and nucleus accumbens activations reflected both the processes of reward and punishment, whereas insular activation increased as a linear function of punishment. Activation in the hippocampus and parahippocampal cortex predicted subsequent retrieval success of source memories. Additionally, correlations between these reward/punishment-related regions and the hippocampus were significant. The successful encoding of source memories could be enhanced by punishments and rewards, and interactions between reward/punishment-related regions and memory-related regions could contribute to memory enhancement by reward and/or punishment.
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