Motor strip stroke mri
Motor Strip Infarct:
The precentral gyrus (also known as the motor strip) is a prominent structure on the surface of the posterior frontal lobe.
There is a precise somatotopic representation of the different body parts in the primary motor cortex, with the leg area located medially (close to the midline), and the head and face area located laterally on the convex side of the cerebral hemisphere (cortical homunculus).
Branches of the middle cerebral artery provide most of the arterial blood supply for the primary motor cortex. The medial aspect (leg areas) is supplied by branches of the anterior cerebral artery.
Lesions of the precentral gyrus result in paralysis of the contralateral side of the body (facial palsy, arm-/leg monoparesis, hemiparesis) - see upper motor neuron.
Accession: CL0422
Study description: MR BRAIN=HD
