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Related Concept Videos

Indirect Motor Pathways01:22

Indirect Motor Pathways

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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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Major Somatic Sensory Pathways01:28

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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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Diencephalon: Thalamus and Information Relay01:27

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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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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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Somatosensory, Motor, and Association Cortex01:24

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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
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Motor and Sensory Areas of the Cortex01:14

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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
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Related Experiment Video

Updated: Dec 7, 2025

Assessing Corticospinal Excitability During Goal-Directed Reaching Behavior
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Cortico-cerebellar interactions during goal-directed behavior.

Nuo Li1, Thomas D Mrsic-Flogel2

  • 1Department of Neuroscience, Baylor College of Medicine, United States.

Current Opinion in Neurobiology
|September 26, 2020
PubMed
Summary
This summary is machine-generated.

The cerebellum helps the brain prepare for actions by learning to smoothly shift between brain activity states, enabling flexible and timely movements.

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Last Updated: Dec 7, 2025

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Neuroscience

Background:

  • Preparatory brain activity precedes goal-directed movements, involving interconnected regions.
  • This activity is thought to represent specific future actions but the underlying mechanisms are unclear.
  • The cerebellum's role in neocortical preparatory activity is a recent area of investigation.

Purpose of the Study:

  • To review recent findings on cortico-cerebellar interactions in motor preparation.
  • To propose a functional role for the cerebellum in mediating brain state transitions.
  • To offer perspective on how these interactions support flexible behavior.

Main Methods:

  • Review of recent neuroscientific literature.
  • Analysis of cortico-cerebellar circuit functions.
  • Theoretical modeling of brain activity state transitions.

Main Results:

  • Evidence suggests the cerebellum influences neocortical preparatory activity.
  • The cerebellum may learn to facilitate transitions between neocortical activity states.
  • These transitions are crucial for adaptive motor control.

Conclusions:

  • Cortico-cerebellar interactions are vital for motor preparation.
  • The cerebellum's function extends beyond motor execution to include preparatory processes.
  • Cerebellar learning facilitates flexible behavioral responses through state transitions.