Stress modulates reinforcement learning in younger and older adults.
Stress modulates reinforcement learning in younger and older adults.
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DOI：
10.1037/a0029823
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发表时间：
2013-03
影响因子：
3.7
通讯作者：
Mather, Mara
中科院分区：
文献类型：
--
作者：
Lighthall, Nichole R.;Gorlick, Marissa A.;Schoeke, Andrej;Frank, Michael J.;Mather, Mara
Animal research and human neuroimaging studies indicate that stress increases dopamine levels in brain regions involved in reward processing and stress also appears to increase the attractiveness of addictive drugs. The current study tested the hypothesis that stress increases reward salience, leading to more effective learning about positive than negative outcomes in a probabilistic selection task. Changes to dopamine pathways with age raise the question of whether stress effects on incentive-based learning differ by age. Thus, the present study also examined whether effects of stress on reinforcement learning differed for younger (age 18–34) and older participants (age 65–85). Cold pressor stress was administered to half of the participants in each age group and salivary cortisol levels were used to confirm biophysiological response to cold stress. Following the manipulation, participants completed a probabilistic learning task involving positive and negative feedback. In both younger and older adults, stress enhanced learning about cues that predicted positive outcomes. In addition, during the initial learning phase, stress diminished sensitivity to recent feedback across age groups. These results indicate that stress affects reinforcement learning in both younger and older adults and suggests that stress exerts different effects on specific components of reinforcement learning depending on their neural underpinnings.
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影响因子：
3.7
作者：
Diamond, Adele
通讯作者：
Diamond, Adele
影响因子：
2.7
作者：
Del Arco, Alberto;Segovia, Gregorio;Mora, Francisco
通讯作者：
Mora, Francisco
影响因子：
5.2
作者：
Eppinger B;Hämmerer D;Li SC
通讯作者：
Li SC
影响因子：
3.2
作者：
Eppinger, Ben;Kray, Jutta
通讯作者：
Kray, Jutta
DOI：
10.1016/b978-0-12-374620-7.00019-4
发表时间：
2009-01-01
期刊：
HANDBOOK OF REWARD AND DECISION MAKING
影响因子：
--
作者：
Doll, Bradley B.;Frank, Michael J.
通讯作者：
Frank, Michael J.