Learning and memory: Artificial activation of a memory trace.

摘要

How memories are represented at the neuronal level is a central question in neuroscience. It is thought that a learning experience is encoded by a population of neurons, forming a memory trace or engram. Two papers, published in Science and Nature, now show that distinct memories have distinct memory traces in the hippocampus, and that a memory trace can be artificially activated to induce fear behaviour.