贝叶斯推断是由前额叶皮层视觉运动神经元的贝叶斯推断
Thomas Langlois1, Julie A Charlton2, Robbe L T Goris1
1Center for Perceptual Systems, The University of Texas at Austin, Austin, TX USA.
bioRxiv : the preprint server for biology
|October 10, 2024
概括
这项研究揭示了大脑如何将感官信息与事先的预期结合起来,以便做出决定. 前额叶皮层神经活动表明,先前的信念影响决策动态,影响知觉准确性.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策科学 决策科学 决策科学
背景情况:
- 感知判断源于决策领域的神经活动.
- 模两可的感官输入可以被先前的期望所偏见,证明贝叶斯推理.
- 结合感官信号和事先对决策的预期的神经机制仍然不清楚.
研究的目的:
- 研究前额叶皮质电路如何整合感官信号和先前预期.
- 分析代表感知决策形成的神经群体活动.
- 了解决策变量 (DV) 在不同预期条件下的动态演变.
主要方法:
- 在子的前额叶皮层记录了神经群体的活动.
- 训练子报告对模两可的视觉刺激的感知判断.
- 分析了决定变量 (DV) 动态,反映了感官和先前集成.
主要成果:
- 决策变量 (DV) 的动态演变整合了感官信号和先前的预期.
- 先前的期望影响了刺激呈现前和期间的DV轨迹.
- 较小的DV动态范围与更有偏见和不太敏感的感知决策相关.
结论:
- 前额叶皮层电路可以通过将感官证据与先前的预期整合来实现贝叶斯推理.
- 决策变量的神经动力学揭示了偏见感知的机制.
- 这项研究阐明了先前知识如何塑造大脑中的感知决策.
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