The Engram of Odor Learning in the Piriform Cortex of the Rat

我们如何形成记忆，以及记忆在大脑中是如何表现的？神经科学的最新进展表明，外部事件在大脑中表现为神经元活动的模式。大脑的输入来自我们的感官，它激活了特定大脑区域的神经元群体。由给定输入激活的神经元群体形成神经元集合，这是大脑中感觉输入的表示。我们的研究表明，记忆是由基于先前经验的独特神经元集合重组而形成的。

How do we form memory and how is memory represented in the brain? Recent advances in neuroscience suggest that external events are represented in the brain as patterns of neuronal activity. Input to the brain arrives from our senses, which activate populations of neurons in particular brain regions. The population of neurons activated by a given input forms a neuronal ensemble, a read out which is the representation of the sensory input in the brain. Our research suggests that memory is formed by a reorganization of unique neuronal ensembles based on previous experience.