大脑是昂贵的,但认知通常是廉价的
Kacper Kondrakiewicz1, Jagoda Nawrocka2
1NeuroElectronics Research Flanders (imec, KU Leuven & VIB), Leuven, Belgium.
Neuroscience and biobehavioral reviews
|October 31, 2025
概括
认知任务不会显著增加大脑的能量消耗. 保持休息大脑状态可能与积极思维一样代谢昂贵,这挑战了不活动节省能量的想法.
科学领域:
- 神经科学是一个神经科学.
- 代谢研究的研究.
- 认知科学是一种认知科学.
背景情况:
- 主流观点认为,认知活动是代谢上昂贵的.
- 这种信念源于假设增加的神经计算需要更高的能源需求.
研究的目的:
- 挑战认知任务总是代谢上昂贵的假设.
- 探索与维持休息大脑状态相比,参与认知任务的代谢成本.
- 调查对理解大脑功能,行为和进化的影响.
主要方法:
- 通过对哺乳动物的大脑成像和全身测量进行实验证据的审查.
- 在认知任务和休息状态期间分析代谢成本.
主要成果:
- 认知任务通常显示总体能源消耗的增加很小或没有增加.
- 保持休息的大脑状态可以在代谢上与从事明确的认知任务相比较.
- 不活动可能不是一个有效的节能策略.
结论:
- 认知活动的代谢成本经常被高估.
- 了解稳定大脑能量消耗的恒温机制对于神经计算至关重要.
- 非仪器活动的进化持续性可以通过减少勘探而缺乏显著的代谢节约来解释.
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