Center for Systems Neuroscience, Boston University, Boston, Massachusetts, USA.
Hippocampus. 2023 May;33(5):465-487. doi: 10.1002/hipo.23513. Epub 2023 Mar 1.
This paper reviews the recent experimental finding that neurons in behaving rodents show egocentric coding of the environment in a number of structures associated with the hippocampus. Many animals generating behavior on the basis of sensory input must deal with the transformation of coordinates from the egocentric position of sensory input relative to the animal, into an allocentric framework concerning the position of multiple goals and objects relative to each other in the environment. Neurons in retrosplenial cortex show egocentric coding of the position of boundaries in relation to an animal. These neuronal responses are discussed in relation to existing models of the transformation from egocentric to allocentric coordinates using gain fields and a new model proposing transformations of phase coding that differ from current models. The same type of transformations could allow hierarchical representations of complex scenes. The responses in rodents are also discussed in comparison to work on coordinate transformations in humans and non-human primates.
本文综述了最近的实验发现，在与海马体相关的许多结构中，行为啮齿动物的神经元表现出自我中心的环境编码。许多基于感觉输入产生行为的动物必须处理坐标从相对于动物的感觉输入的自我中心位置到关于多个目标和物体在环境中彼此相对的位置的无中心框架的转换。后顶叶皮层中的神经元表现出与动物相关的边界位置的自我中心编码。这些神经元反应与使用增益场的从自我中心到无中心坐标的转换的现有模型以及提出的相位编码转换的新模型进行了讨论，该模型与当前模型不同。这种类型的转换可以允许复杂场景的分层表示。还讨论了啮齿动物的反应与人类和非人类灵长类动物的坐标转换工作的比较。
