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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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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
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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Related Experiment Video

Updated: Sep 29, 2025

Determining the Functional Status of the Corticospinal Tract Within One Week of Stroke
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Published on: February 22, 2020

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Longitudinal changes of motor cortex function during motor recovery after stroke.

Li Chunyong1, Li Yingkai2, Liu Fuda3

  • 1Department Encephalopathy, Guangzhou Conghua District Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong, China.

Topics in Stroke Rehabilitation
|March 21, 2022
PubMed
Summary

Motor cortex activation changes over time after stroke, with distinct patterns observed between dominant and nondominant hemispheres. This research aids in understanding brain plasticity for stroke rehabilitation.

Keywords:
BOLDfMRImotor cortexrehabilitationreorganizationstroke

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Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
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Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Rehabilitation Science

Background:

  • Stroke-induced brain injury leads to motor deficits.
  • Understanding motor cortical reorganization is crucial for effective rehabilitation.

Purpose of the Study:

  • Investigate dynamic motor cortical functional reorganization after infarction using fMRI.
  • Provide a theoretical basis for rehabilitation strategies after cerebral injuries.

Main Methods:

  • Longitudinal observational study of 20 acute stroke patients and healthy controls.
  • Repeated task-based functional magnetic resonance imaging (fMRI) over 3 months.
  • Behavioral assessments included dynamometer and finger-tapping tests.

Main Results:

  • Significant behavioral improvements observed in stroke patients over time.
  • Patients showed greater ipsilateral motor cortex activation compared to healthy controls.
  • Motor activation patterns differed between stroke patients with left vs. right hemisphere lesions.

Conclusions:

  • Motor cortical activation patterns evolve post-stroke, reflecting brain plasticity.
  • Hemispheric differences in motor functional recovery and compensation were identified.