任务目标塑造了决策与运动速度之间的关系
Fanny Fievez1, Ignasi Cos2,3, Thomas Carsten1
1Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium.
Journal of neurophysiology
|November 6, 2024
概括
决策和移动速度是相互关联的,但当它损害奖励率时,这种共同调节会消失. 这表明灵活的控制流程根据任务目标和潜在的奖励来塑造我们的行动.
科学领域:
- 认知神经科学 认知神经科学
- 人类运动控制人体运动控制
- 决策科学 决策科学 决策科学
背景情况:
- 决策速度和移动速度之间的关系尚未完全理解.
- 现有研究提出了相互矛盾的结果,表明要么共同加强,要么进行速度准确性权衡.
研究的目的:
- 调查是否存在一个共享的过程,将决策和移动速度联系在一起.
- 测试这个链接是否被抑制,当它对奖励率产生负面影响时.
主要方法:
- 62个人类受试者在两个实验中执行了Tokens任务.
- 实验1检查了决策速度如何影响运动速度.
- 实验2操纵运动速度以评估其对决策速度的影响,对决策速度或准确性进行激励.
主要成果:
- 在实验1和实验2的快速决策组中观察到决策紧迫性和移动速度的协同调节.
- 在实验2的缓慢决策组中,尽管在实验1中显示了它们的协同调节能力,但这种协同调节缺席了实验2的缓慢决策组.
- 研究结果表明,共同调节是默认的,但在最大化奖励率时,可以通过权衡来取代.
结论:
- 决策和移动速度是默认的共同调节.
- 这种协同调节是由任务需求和奖励率优化调节的.
- 多重控制过程可能会影响决策和行动的速度.
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