| Brain: Intraparietal sulcus | ||
|---|---|---|
| Lateral surface of left cerebral hemisphere, viewed from the side. (Intraparietal sulcus visible at upper right, running horizontally.) | ||
| Principal fissures and lobes of the cerebrum viewed laterally. (Fissures not labeled, but parietal lobe is colored yellow.) | ||
| Latin | sulcus intraparietalis | |
| Gray's | subject #189 822 | |
| Part of | Parietal lobe | |
| Acronym(s) | IPS | |
| NeuroNames | hier-79 | |
| NeuroLex ID | birnlex_4031 | |
The intraparietal sulcus (IPS) is located on the lateral surface of the parietal lobe, and consists of an oblique and a horizontal portion. The IPS contains a series of functionally distinct subregions that have been intensively investigated using both single cell neurophysiology in primates[1][2] and human functional neuroimaging.[3] Its principal functions are related to perceptual-motor coordination (for directing eye movements and reaching) and visual attention.
The IPS is also thought to play a role in other functions, including processing symbolic numerical information,[4] visuospatial working memory [5] and interpreting the intent of others.[6]
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Behavioral studies suggest that the IPS is associated with impairments of basic numerical magnitude processing and that there is a pattern of structural and functional alternations in the IPS and in the PFC in dyscalculia.[7] Children with developmental dyscalculia were found to have less gray matter in the left IPS.[8]
Five regions of the intraparietal sulcus (IPS): anterior, lateral, ventral, caudal, and medial
All of these areas have projections to the frontal lobe for executive control.
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