Sensorimotor Integration by Corticospinal System.
Yunuen Moreno-López1, Rafael Olivares-Moreno1, Matilde Cordero-Erausquin2
1Departamento de Neurobiología del Desarrollo y Neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla Querétaro, México.
Frontiers in Neuroanatomy
|March 26, 2016
Summary
The corticospinal (CS) tract modulates motor commands and sensory feedback by controlling spinal interneurons and motoneurons. Further research is needed to understand its complex organization and synaptic interactions for better motor control insights.
Area of Science:
- Neuroscience
- Motor Control
- Sensory Processing
Background:
- The corticospinal (CS) tract is crucial for motor commands, influencing spinal interneurons and motoneurons.
- This tract also modulates sensory feedback, highlighting its dual role in sensorimotor function.
- Current understanding of the corticospinal tract's (CST) spinal networks, cortical organization, and synaptic interactions remains limited.
Purpose of the Study:
- To investigate the spinal networks engaged by the CST.
- To elucidate the organization of CS projections and intracortical microcircuitry within the sensorimotor cortex (SMC).
- To understand synaptic interactions encoding cortical outputs to the spinal cord for motor control.
Main Methods:
- The study emphasizes the need for integrated approaches to investigate sensorimotor function.
- Focus on analyzing the functional compartmentalization of layer 5 output neurons.
- Examination of the hierarchical organization of these key neurons in motor control.
Main Results:
- CS projections are confirmed to drive distinct segmental neural circuits within sensory and pre-motor pathways.
- Evidence suggests a complex modulation of sensory feedback by the CS system.
- Layer 5 output neurons in the SMC are identified as critical for motor control and behavior.
Conclusions:
- Integrated approaches are vital for a comprehensive understanding of the CS system's sensorimotor functions.
- Further research into the CST's organization and synaptic mechanisms is required.
- Understanding these pathways is key to deciphering the neural basis of motor control and behavior.
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