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Related Concept Videos

Hierarchy of Motor Control01:18

Hierarchy of Motor Control

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The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
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Indirect Motor Pathways01:22

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The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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Direct Motor Pathways01:11

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The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
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The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is  a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
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A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
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Related Experiment Video

Updated: Mar 7, 2026

Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
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Locomotion: Control from the Periphery?

Claire Wyart1

  • 1Institut du Cerveau et de la Moelle épinière (ICM), 47, bld hopital, Paris 75013, France.

Current Biology : CB
|February 22, 2017
PubMed
Summary

Neural control of locomotion involves more than just motoneuron firing. New research shows synaptic transmission at the neuromuscular junction plays a key role, with inverse relationships in motoneurons.

Area of Science:

  • Neuroscience
  • Motor Control
  • Synaptic Plasticity

Background:

  • Locomotion control traditionally emphasizes premotor neuron modulation of motoneuron firing.
  • The role of neuromuscular junction (NMJ) regulation in motor control is less understood.

Purpose of the Study:

  • To investigate the significance of synaptic transmission regulation at the NMJ in neural control of locomotion.
  • To explore the relationship between motoneuron properties and synaptic output.

Main Methods:

  • Electrophysiological recordings in motoneurons.
  • Analysis of synaptic transmission at the neuromuscular junction.
  • Investigation of input resistance in motoneurons.

Main Results:

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  • Synaptic transmission regulation at the NMJ is crucial for locomotion control.
  • An inverse relationship was identified between motoneuron input resistance and synaptic output.
  • Motoneuron intrinsic properties influence synaptic efficacy.

Conclusions:

  • Neuromuscular junction synaptic regulation is a vital component of motor control.
  • Motoneuron input resistance is a key factor determining synaptic output.
  • This finding expands our understanding of neural circuits governing movement.