前额叶皮层在视觉搜索中编码价值弹出
Mojtaba Abbaszadeh1, Armin Panjehpour2, Seyyed Mohammad Amin Alemohammad2,1
1School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
iScience
|September 8, 2023
概括
长期的对象价值关联提高了视觉搜索效率. 腹侧前额叶皮层 (vlPFC) 快速检测有价值的目标,对于竞争环境至关重要.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 灵长类动物研究研究
背景情况:
- 长期的对象价值关联提高了视觉搜索效率 (价值弹出).
- 价值爆发背后的神经机制尚未完全理解.
- 腹侧前额叶皮层 (vlPFC) 参与视觉搜索和价值记忆.
研究的目的:
- 在vlPFC中研究基于价值的视觉搜索的神经机制.
- 为了确定vlPFC单个单元活动在基于价值的快速目标检测中的作用.
主要方法:
- 在两只的vlPFC中记录了单单元活动 (n=526).
- 子执行了以价值为导向的视觉搜索任务,在低价值的分心因素中确定了高价值的目标.
- 分析了与搜索性能相关的神经发射率和马波段功率.
主要成果:
- 在vlPFC中,差分神经发射和马波段功率在~150ms内发出了目标存在信号.
- 这种差异性活动与搜索时间有负相关性,并且在高效搜索过程中显示了对设置大小的依赖性减少.
- 不高效的搜索与更高的神经发射和更高的可变性有关.
结论:
- 在视觉搜索过程中,vlPFC在快速检测有价值目标方面发挥着至关重要的作用.
- 在vlPFC中神经活动反映了搜索效率,更快的检测与特定的发射模式相关.
- 这些发现强调了vlPFC在竞争环境中的适应性行为中的重要性.
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