1、Engram is a term used in psychology to refer to a physical or biochemical change in the brain that represents a memory.
（译：Engram是心理学中用来指代代表记忆的大脑物理或生化变化的一个术语。）

2、The study aims to understand how engrams are formed and how they influence our ability to recall information.
（译：这项研究旨在了解engrams（人脑痕迹）是如何形成的以及它们如何影响我们回忆信息的能力。）