---
title: "Scientists create artificial link between unrelated memories"
description: "In a new study, synchronous activation of distinct neuronal ensembles caused mice to artificially associate the memory of a foot shock with the unrelated memory of exploring a safe environment."
date: "2015-04-06"
modified: "2015-09-24"
authors:
  - name: "Alex Klokus"
    link: "https://futurism.com/authors/alex-klokus"
url: "https://futurism.com/scientists-create-artificial-link-between-unrelated-memories"
categories:
  - "Brain"
  - "Health & Medicine"
  - "Neuroscience and Brain"
tags:
  - "neuroscience"
---

# Scientists create artificial link between unrelated memories

![](<https://futurism.com/wp-content/uploads/2015/04/optogenetics.png>)

- Recent studies have shown that subpopulations of neurons activated during learning are reactivated during subsequent memory retrieval, and reactivation of a cell ensemble triggers the retrieval of the corresponding memory. Moreover, artificial reactivation of a specific neuronal ensemble corresponding to a pre-stored memory can modify the acquisition of a new memory, thereby generating false or synthetic memories.
- The team used a technique called optogenetics, which involves genetically modifying specific populations of neurons to express light-sensitive proteins that control neuronal excitability, and then delivering blue light through an optic fiber to activate those cells.
- The findings show that synchronous activation of distinct cell ensembles can generate artificial links between unrelated pieces of information stored in memory, resulting in long-lasting changes in behavior. "By modifying this technique, we will next attempt to artificially dissociate memories that are physiologically connected,” the researchers say.

### Author social links  
[LinkedIn](<https://www.linkedin.com/in/alexklokus>)