Related Experiment Video
Updated: Jun 12, 2026
11:15
Automated Visual Cognitive Tasks for Recording Neural Activity Using a Floor Projection Maze
Published on: February 20, 2014
Development of the spatial representation system in the rat.
Rosamund F Langston1, James A Ainge, Jonathan J Couey
1Kavli Institute for Systems Neuroscience and Centre for the Biology of Memory, Medical Technical Research Center, Norwegian University of Science and Technology, Olav Kyrres gate 9, 7489 Trondheim, Norway.
Science (New York, N.Y.)
|June 19, 2010
Summary
Young rat pups navigating novel environments exhibit a basic spatial map. Head-direction cells are mature early, while place and grid cells develop gradually, suggesting directional cues may guide spatial network formation.
Area of Science:
- Neuroscience
- Cognitive Science
- Developmental Biology
Background:
- The adult brain utilizes a hippocampal-parahippocampal circuit for spatial and orientation representation.
- This circuit comprises head-direction cells, place cells, and grid cells, crucial for navigation.
Purpose of the Study:
- To investigate the presence and development of spatial representation in young rat pups during their first exploration of an open environment.
- To determine the developmental trajectory of head-direction, place, and grid cells in early life.
Main Methods:
- Electrophysiological recordings in 2 1/2-week-old rat pups exploring an open environment.
- Analysis of neuronal activity patterns for head-direction, place, and grid cell properties.
- Assessment of network synchrony among entorhinal stellate cells.
Main Results:
- A rudimentary spatial map is present in rat pups upon initial exploration.
- Head-direction cells in the pre- and parasubiculum display adultlike properties from the outset.
- Place and grid cells are present but undergo gradual development, with grid cells showing the slowest maturation.
- Increased network synchrony among entorhinal stellate cells correlates with spatial representation refinement.
Conclusions:
- Spatial navigation in rats begins with a functional, albeit basic, spatial map.
- Mature head-direction signals appear early and may play a role in establishing place and grid cell networks.
- The development of spatial representation is a gradual process, refined through increasing network synchrony.
