# Emergence of orthogonal hippocampal representations during spatial learning

## TL;DR

The study shows how hippocampal neurons in mice develop distinct patterns as they learn spatial tasks.

## Contribution

The paper introduces the concept of orthogonalized ensemble codes in hippocampal representations during spatial learning.

## Key findings

- Hippocampal neurons show progressive changes during spatial learning.
- Orthogonalized codes emerge to represent task structure and discrimination outcomes.

## Abstract

Sun et al. (2025) reveal the progressive, dynamic changes in the response properties of thousands of hippocampal neurons as mice learn a conditional discrimination while moving along a virtual linear track. At the end of training, separate orthogonalized ensemble codes, reflecting the properties of a state machine, capture the inherent structure of the task while dissociating the discrimination outcomes.