认知负载降低了在味道处理中由前面岛屿加强腹状条纹体:关于自我控制的fMRI研究
Jakub Skałbania1, Łukasz Tanajewski2, Marcin Furtak3
1Faculty of Psychology, University of Warsaw, Warsaw, Poland; Department of Economics, Kozminski University, Warsaw, Poland.
Neuroscience
|February 5, 2025
概括
认知过载通过削弱参与味道和健康处理的大脑连接来破坏食物选择. 这会影响自我控制,特别是在更健康和更美味的选择之间做决定时.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 决策科学 决策科学 决策科学
背景情况:
- 认知过载会损害味觉的情感处理,挑战双系统理论.
- 三方神经认知模型提供了一个框架,包括一个调节认知和情感处理的整体感知系统.
- 了解认知负载对食物自我控制的影响对于饮食行为研究至关重要.
研究的目的:
- 通过三方神经认知模型,研究认知负载如何影响食物选择中的自我控制.
- 检查在认知负载下受影响的情感 (味道) 和认知 (健康) 属性处理中断的神经支柱.
- 测试关于大脑连接性改变的假设,包括整感,冲动和反射系统之间的连接.
主要方法:
- 功能磁共振成像 (fMRI) 用于扫描49名参与者.
- 参与者在高 (HL) 和低 (LL) 工作记忆负载条件下做出需要自我控制的食物选择.
- 分析了前侧胰岛 (AI),腹状条纹体 (VS) 和背侧前额皮层 (DLPFC) 之间的连接.
主要成果:
- 在高认知负载条件下,右前胰岛 (AI) 和腹状条纹体 (VS) 之间的功能连接显著减弱.
- 在高负载下观察到右AI与背侧前额皮层 (DLPFC) 之间的更强的负连接趋势.
- 这些发现表明,认知过载会影响食物选择过程中整感,冲动和反射性大脑系统之间的相互作用.
结论:
- 认知过载会破坏食物自我控制,因为它会损害决策的神经机制.
- 前半岛 (AI) 似乎被同时要求的任务所超载,减少了来自腹状条纹体 (VS) 的强化信号.
- 这提供了一种神经认知解释,解释了认知负载如何在食物选择中破坏口味和健康属性处理.
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