motor area


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motor area

[′mōd·ər ‚er·ē·ə]
(neuroscience)
The ascending frontal gyrus containing nerve centers for voluntary movement; characterized by the presence of Betz cells. Also known as Broadman's area 4; motor cortex; pyramidal area.
References in periodicals archive ?
Resection of prerolandic motor areas defined by nTMS motor evoked potentials correlates with postoperative motor function.
Supplementary motor area and other cortical areas in organization of voluntary movements in man.
The fibres of the corticospinal (pyramidal) tracts, which form the major descending tract, extend from the motor area of cerebral cortex down through the brainstem and occupy the anterior and the lateral aspects of the white matter of the spinal cord.
Those findings correlated with brain activity The positive subjects showed greater activation of the supplementary motor area, parietal regions, frontal gyrus, medial temporal lobe, and parahippocampus.
After I began building it, I decided that even the motor area needed to be rounded," he said.
The cause is almost certainly a combination of multiple brain infarcts and a larger stroke, which has affected the motor area on his right.
Taking over the left motor area, which used to handle modal percepts, the brain used it to handle words, or neutral phonemic strings that it came to associate systematically with the modal percepts handled by the corresponding motor areas of the right hemisphere.
He had some immediate post-operative weakness on the right side (known as supplementary motor area or SMA syndrome.
Niemann et al (1991) also found that after practice of the complex motor task there was a greater reduction in neural activity in the supplementary motor area (SMA).
Using fMRI experiments, we found that the supplementary motor area (SMA) is activated whenever mental tasks include the imaginary of body movements.
The motor area to the lift, accessed by an aluminium ladder, is barred by a lockable metal doorwhichhadsigns that read: "Danger lift machinery.
Firing of the efferent pathways from basal ganglia activates the supplementary motor area followed by the primary cortex and then travel back to the final pathway in the anterior horn to pre-prepare for the demands imposed by activities and occupations.