The inferior parietal lobule lies below the intraparietal sulcus and behind the postcentral gyrus. It is made up of the supramarginal gyrus in front and the angular gyrus behind. It is a major association area linking language, attention, skilled action and spatial awareness.
| Location | Parietal lobe, below the intraparietal sulcus, above the lateral sulcus |
|---|---|
| Parts | |
| Connections |
|
| Blood Supply | Middle cerebral artery (inferior parietal and angular branches) |
Integrates sensory information for language, reading, calculation, skilled movement planning and attention to space.
In the dominant hemisphere, damage causes aphasia, alexia, apraxia and Gerstmann syndrome. In the non-dominant hemisphere, damage is the classic cause of hemispatial neglect and anosognosia, where people are unaware of their own weakness. It is supplied by posterior branches of the middle cerebral artery.
Inattention to the left side of space after right inferior parietal damage.
Unawareness of one's own deficit, such as paralysis, typically after right parietal stroke.
Difficulty performing learned gestures after dominant inferior parietal damage.
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