认知努力增加了奖励的强度
Mejda Wahab1, Nicole L Mead2, Stevenson Desmercieres1
1Université de Poitiers, INSERM, U1084, Laboratoire de Neurosciences Expérimentales et Cliniques, Poitiers 86073, France.
PNAS nexus
|October 23, 2024
概括
强烈的认知努力放大了奖励灵敏度,导致了不健康的行为,如吸毒和过度饮食. 休息可以扭转这些影响,这表明认知负载影响决策和成的脆弱性.
科学领域:
- 神经科学是一个神经科学.
- 行为经济学是一种行为经济学.
- 成研究 研究成研究
背景情况:
- 强烈的认知努力与精神疲劳和不健康的行为有关.
- 以前的解释主要集中在认知控制减弱.
- 一个替代假设表明,认知努力放大了奖励的影响.
研究的目的:
- 调查认知努力是否增强了奖励的享乐效应.
- 检查认知努力对老鼠和人类中毒相关行为的影响.
- 探索认知努力在不健康决策中的作用.
主要方法:
- 在自给可卡因之前,老鼠经历了认知努力任务.
- 在评估食物奖励之前,人类参与者执行了认知任务.
- 行为和自我报告措施评估了药物摄入量,奖励敏感性和享乐快乐.
主要成果:
- 在老鼠中,认知努力增加了可卡因摄入量及其精神刺激作用.
- 在老鼠中,休息时间 (2-4小时) 消除或逆转了这些影响.
- 在人类中,认知努力通过增加快乐的享受来促进食用美味食物的消费.
- 影响是特定于情感相关的奖励 (食物),而不是中性刺激.
结论:
- 强烈的认知努力放大了奖励的感知强度,促进了过度消费.
- 这种机制可以解释在认知负载下做出糟糕的决策.
- 认知努力增加了对不健康行为的脆弱性,包括吸毒和过度饮食.
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