Related Experiment Video
Updated: May 12, 2026
A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments
Published on: April 15, 2014
The rat prefrontostriatal system analyzed in 3D: evidence for multiple interacting functional units.
Philippe Mailly1, Verena Aliane, Henk J Groenewegen
1Institut National de la Santé et de la Recherche Médicale UMRs 952, Centre National de Recherche Scientifique UMR 7224, Université Pierre et Marie Curie, 75252 Paris Cedex 05, France. philippe.mailly@snv.jussieu.fr
This study reveals that rat and primate prefrontostriatal projections share similar dual patterns of focal and diffuse connections. Overlapping projection territories suggest integrated reward, cognitive, and motor processing in the striatum.
Area of Science:
- Neuroscience
- Comparative Anatomy
- Systems Neuroscience
Background:
- Corticostriatal projections are crucial for motor control, reward processing, and cognition.
- Previous studies in non-human primates identified distinct patterns of prefrontal and premotor projections to the striatum.
Purpose of the Study:
- To analyze the three-dimensional (3D) organization of prefrontostriatal innervation in rats.
- To compare rodent and primate corticostriatal projection patterns.
- To identify potential convergence zones within the striatum for integrating different processing streams.
Main Methods:
- Utilized a 3D tracing approach following tracer injections into defined rat cortical areas.
- Generated individual 3D maps of projections.
- Combined individual maps into a global 3D map to identify overlapping projection territories.
Main Results:
- Provided a detailed 3D topographic map of prefrontal cortical areas in the rat striatum.
- Confirmed a dual pattern of focal and diffuse corticostriatal projections, similar to primates.
- Identified spatially organized overlaps in projection territories along the striatal axes.
- Highlighted extensive overlaps from prelimbic and anterior cingulate areas with other prefrontal regions.
Conclusions:
- Rat and primate prefrontostriatal projections exhibit significant similarities in their organization.
- The interweaving of projection territories suggests functional convergence for integrating reward, cognitive, and motor information.
- This study provides a refined understanding of the neuroanatomical basis for complex behaviors.
