Plasticity of Sensorimotor Networks: Multiple Overlapping Mechanisms

Area of Science:

• Neuroscience
• Motor Control
• Systems Biology

Background:

• The motor system exhibits significant redundancy, with abundant degrees of freedom across neural and musculoskeletal components.
• This inherent redundancy provides flexibility and robustness, enabling adaptation through plasticity.
• Traditional focus on synaptic plasticity has expanded to include neuron-glia interactions, epigenetics, and network dynamics.

Purpose of the Study:

• To review diverse plasticity mechanisms underlying motor system organization.
• To discuss the role of these mechanisms in regulating intrinsic variability.
• To explore their potential applications in neurorehabilitation.

Main Methods:

• Literature review of recent investigations into motor system plasticity.
• Synthesis of findings on neuron-glia interactions, epigenetic mechanisms, and network dynamics.
• Discussion of the implications for motor control and adaptation.

Main Results:

• Multiple, overlapping plasticity mechanisms operate across various spatial and temporal scales.
• These mechanisms are crucial for regulating intrinsic variability within the motor system.
• Emerging research highlights novel pathways beyond traditional synaptic plasticity.

Conclusions:

• The motor system's adaptability relies on a wide array of plasticity mechanisms.
• Understanding these mechanisms is key to developing effective neurorehabilitation strategies.
• Future research should further elucidate the interplay of these mechanisms for functional recovery.