Deciphering the organization and modulation of spinal locomotor central pattern generators

Area of Science:

• Neuroscience
• Motor Control
• Systems Biology

Background:

• Rhythmic motor behaviors like walking are controlled by neuronal networks.
• The spinal cord contains basic circuitry for locomotion, but identifying specific neurons is challenging.
• Understanding these networks is key to deciphering motor control.

Purpose of the Study:

• To review recent advances in understanding spinal locomotor networks.
• To highlight the use of combined genetic and electrophysiological techniques in mouse models.
• To discuss the identification of neuronal populations involved in pattern generation.

Main Methods:

• Utilizing in vitro preparations of the mouse spinal cord.
• Employing a combination of genetic and electrophysiological techniques.
• Dissecting the circuitry of spinal locomotor networks.

Main Results:

• Significant progress has been made in identifying candidate neuronal populations.
• New tools have emerged from merging electrophysiological and genetic approaches.
• Specific classes of interneurons contributing to network function are being identified.

Conclusions:

• Advances in techniques are crucial for understanding spinal locomotor networks.
• The mouse spinal cord serves as a key model for these investigations.
• Identifying neuronal components is essential for understanding rhythmic motor behavior generation.