Motor neglect associated with a discrete parietal lesion
Related Experiment Video
Updated: Nov 9, 2026

Behavioral Assessment of Manual Dexterity in Non-Human Primates
Published on: November 11, 2011
W J Triggs1, M Gold, G Gerstle
1Department of Neurology, University of Florida, Gainesville 32610.
Abstract:
The syndrome of motor neglect may follow brain lesions affecting frontal, subcortical, and parietal structures. However, pure motor neglect has not been previously associated with a lesion confined to the parietal lobe. We observed a 79-year-old right-handed man with right-sided limb akinesia and motor neglect without concomitant sensory or visuospatial neglect. MRI showed a left posterior parietal infarct sparing the primary sensorimotor cortex. Transcranial magnetic stimulation showed comparable thresholds for electromyographic activation of the muscles of the right and left arm and normal central motor conduction times, indicating functional integrity of the motor cortex. This case demonstrates that a discrete parietal lesion can produce a pure intentional disorder, independent of sensory or visuospatial neglect.
More Related Videos
07:04Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
Published on: March 10, 2021
05:44Selective and Permanent Occlusion of the Middle Cerebral Artery in Rats: An Experimental Approach for Studying Motor and Spatial Memory Deficits
Published on: March 20, 2026
Related Concept Videos
Role of Cerebellum and Prefrontal Cortex in Memory
Somatosensation
Prosopagnosia
Visual Agnosia
Motor and Sensory Areas of the Cortex
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.