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情色暗示暴露增加了生理性兴奋,偏向于立即奖励的选择,并减弱了基于模型的强化学习
David Mathar1, Annika Wiebe2, Deniz Tuzsus1
1Department of Psychology, Biological Psychology, University of Cologne, Cologne, Germany.
Psychophysiology
|July 12, 2023
概括
情色线索通过影响时间折扣和减少基于模型的强化学习来增加决策中的不耐烦. 这项研究揭示了环境刺激如何影响健康男性的核心认知过程.
科学领域:
- 计算精神病学是一种计算精神病学.
- 认知神经科学是一种认知神经科学.
- 行为经济学是一种行为经济学.
背景情况:
- 计算精神病学研究精神疾病中的认知变化,重点关注时间折扣和基于模型的强化学习.
- 时间折扣虽然稳定,但可以受到情境因素的影响,如兴奋.
- 激发线索对基于模型的强化学习的影响在很大程度上仍未被探索.
研究的目的:
- 调查色情暗示暴露对健康男性时间折扣和基于模型的强化学习的影响.
- 评估主观和生理性兴奋对色情和中性线索的反应.
- 阐明在决策过程中基因反应性背后的认知机制.
主要方法:
- 在主体内设计39个健康的异性恋男性.
- 在暗示暴露期间评估主观和生理兴奋 (心脏活动,瞳孔扩张).
- 层次偏移扩散建模 (DDM) 和模型不可知分析来评估时间折扣和强化学习.
主要成果:
- 情色暗示暴露显著增加了主观和生理兴奋.
- 兴奋的增加导致时间折扣的增加 (更不耐烦的选择).
- 基于模型的强化学习减少了后性感暗示暴露,与减弱的忘记率有关.
结论:
- 在基于模型的强化学习中复制暗示反应效应对时间折扣的影响和新的演示.
- 环境线索,就像色情刺激一样,可以调节基本的决策过程.
- 先进的建模技术为基于奖励的决策提供了更深入的见解.
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