Related Experiment Video
Updated: May 28, 2026
09:35
Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice
Published on: January 20, 2015
Environmental enrichment modulates cortico-cortical interactions in the mouse
Angelo Di Garbo1, Marco Mainardi, Santi Chillemi
1Institute of Biophysics, CNR-National Research Council, Pisa, Italia.
Plos One
|October 4, 2011
Summary
Environmental enrichment (EE) alters brain development by modifying how different brain regions communicate. This study found that EE reduces the functional coupling between the motor cortex and the primary visual cortex (V1) in mice.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Systems Neuroscience
Background:
- Environmental enrichment (EE) involves complex sensorimotor stimulation impacting brain development.
- The precise mechanisms by which EE shapes cortico-cortical interactions remain unclear.
- The primary visual cortex (V1) is a known target of EE, suggesting potential alterations in its connectivity.
Purpose of the Study:
- To investigate the impact of EE on cortico-cortical interactions, specifically focusing on the connection between the motor cortex and V1.
- To determine if EE modulates the functional coupling between these two brain regions.
Main Methods:
- Identification of a direct monosynaptic connection between the motor cortex and V1 in the mouse brain.
- Simultaneous recording of local field potentials (LFPs) in awake, freely moving mice under standard and EE rearing conditions.
- Analysis of LFP signals using linear and nonlinear time series methods, including cross-correlation, mutual information, and phase synchronization.
Main Results:
- Environmental enrichment significantly decreases the level of coupling between the electrical activities of the motor cortex and V1 compared to control groups.
- This reduction in coupling suggests a modulation of functional crosstalk between these cortical areas due to enhanced sensorimotor experience.
Conclusions:
- EE impacts brain development by altering functional crosstalk between distinct cortical areas.
- This study provides the first evidence that enhanced sensorimotor experience affects inter-areal communication in the brain, specifically between motor and visual cortices.
