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Perspectives on classical controversies about the motor cortex
Mohsen Omrani1, Matthew T Kaufman2, Nicholas G Hatsopoulos3
1Brain Health Institute, Rutgers University, Piscataway, New Jersey; mohsen.omrani@rutgers.edu.
Journal of Neurophysiology
|June 16, 2017
Summary
The primary motor cortex (M1) role in movement control remains debated, focusing on low-level dynamics versus high-level kinematics and sensory feedback integration. This review presents diverse expert views to advance understanding of M1
Area of Science:
- Neuroscience
- Motor Control
- Systems Neuroscience
Background:
- The primary motor cortex (M1) has been extensively studied for over a century.
- A definitive consensus on its precise functional contribution to movement control is still lacking.
- Key controversies include M1's role in low-level movement dynamics versus high-level kinematics and the influence of sensory feedback.
Purpose of the Study:
- To explore differing perspectives on the functional role of the primary motor cortex (M1).
- To investigate what neural activity within M1 reflects regarding movement.
- To examine how planned motor commands interact with sensory feedback during movement execution.
Main Methods:
- This review presents independent viewpoints from four authors on M1's control of movement.
- A synthesized dialogue among the authors is included to discuss and integrate their perspectives.
- The methodology involves a critical review and expert discussion of existing theories and evidence.
Main Results:
- The review highlights ongoing debate regarding M1's specific contribution to movement control.
- Different authors propose distinct interpretations of M1 activity and its relation to movement parameters.
- The role and integration of sensory feedback in M1-mediated movement remain a subject of contention.
Conclusions:
- There is no current consensus on the exact role of the primary motor cortex (M1) in controlling upper limb movements.
- Expert dialogues and the synthesis of diverse viewpoints are crucial for advancing the field.
- Further research and discussion are needed to resolve the controversies surrounding M1 function and sensory feedback integration.
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