People with a right parietal lobe injury, for example, will commonly suffer from a syndrome called spatial hemi-neglect. Depending on the size and lo… - Michael S. Gazzaniga

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People with a right parietal lobe injury, for example, will commonly suffer from a syndrome called spatial hemi-neglect. Depending on the size and location of the lesion, patients with hemi-neglect may behave as if part or all of the left side of their world, which may include the left side of their body, does not exist! This could include not eating off the left side of their plate, not shaving or putting makeup on the left side of their face, not drawing the left side of a clock, not reading the left pages of a book, and not acknowledging anything or anyone in the left half of the room. Some will deny that their left arm and leg are theirs and will not use them when trying to get out of bed, even though they are not paralyzed. Some patients will even neglect the left side of space in their imagination and memories.3 That the deficits vary according to the size and location of the lesion suggests that damage that disrupts specific neural circuits results in impairments in different component processes.