The superior parietal lobule is the area of parietal cortex above the intraparietal sulcus and behind the postcentral gyrus. It corresponds largely to Brodmann areas 5 and 7. It combines touch, body position and vision to build an awareness of the body in space.
| Location | Parietal lobe, above the intraparietal sulcus and behind the postcentral sulcus |
|---|---|
| Parts |
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| Connections |
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| Blood Supply | Middle cerebral artery; Anterior cerebral artery (medial part) |
Integrates body position sense with vision to guide reaching and grasping and to maintain a body map in space.
Damage can cause optic ataxia, inaccurate reaching for objects under visual guidance, as seen in Balint syndrome when both sides are involved. Lesions may also cause astereognosis and impaired awareness of the opposite limb. It forms part of the dorsal visual stream, the 'where' and 'how' pathway.
Inaccurate visually guided reaching from superior parietal damage, part of Balint syndrome when bilateral.
Optic ataxia, inability to see more than one object at a time and difficulty directing gaze, after bilateral parieto-occipital damage.
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