将场景记忆和感知活动与脑皮层后部的功能性质,网络和地标联系起来 - - 一个概率地图
Adam Steel1,2, Deepasri Prasad3, Brenda D Garcia4
1Department of Psychology, University of Illinois adamdanielsteel@gmail.com.
概括
研究人员确定了大脑中位置记忆区域 (PMA) 的精确解剖位置,揭示它们位于视觉场景感知区域 (SPA) 之前. 这一发现澄清了它们在整合空间感知和记忆方面的作用.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
背景情况:
- 适应性行为依赖于将视觉感知与空间记忆相结合.
- 之前的研究表明,脑皮层的后部区域,特别是视觉场景感知区域 (SPA) 之前的位置记忆区域 (PMA),都参与其中.
- 精确的PMA的解剖学和层次位置仍然不清楚.
研究的目的:
- 为了精确地描述PMAs相对于SPAs的解剖位置.
- 为了确定PMAs在更广泛的皮层层次结构中的位置.
- 为未来的研究提供这些地区的概率图片.
主要方法:
- 使用了三个功能磁共振成像 (fMRI) 数据集 (44名参与者).
- 使用视觉定位器任务 (场景与面孔) 识别了SPA.
- 通过对比回忆熟悉的地方与熟悉的面孔或多个类别的脑活动来识别PMA.
主要成果:
- 在数据集中,PMAs始终位于SPAs之前的腹部和侧面皮质表面.
- PMA位于面向外部 (背部注意) 和面向内部 (默认模式) 网络之间的边界.
- PMAs位于映射视觉皮层的前面,与SPA的视网膜图不同.
结论:
- 确定了PMAs在皮层层次结构中的关键拐点上的解剖位置.
- 关于大脑如何整合视觉感知和空间记忆来理解场景的理论.
- 释放了概率小组,以帮助未来对空间认知中PMA的研究.
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