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Intraparietal sulcus
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Intraparietal sulcus : ウィキペディア英語版
Intraparietal sulcus

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 and human functional neuroimaging.
Its principal functions are related to perceptual-motor coordination (e.g., directing eye movements and reaching) and visual attention, which allows for visually-guided pointing, grasping, and object manipulation that can produce a desired effect.
The IPS is also thought to play a role in other functions, including processing symbolic numerical information,〔 (link )〕 visuospatial working memory and interpreting the intent of others.
==Function==
Five regions of the intraparietal sulcus (IPS): anterior, lateral, ventral, caudal, and medial
* LIP & VIP: involved in visual attention and saccadic eye movements
* VIP & MIP: visual control of reaching and pointing
* AIP: visual control of grasping and manipulating hand movements
* CIP: perception of depth from stereopsis
All of these areas have projections to the frontal lobe for executive control.
Activity in the intraparietal sulcus has also been associated with the learning of sequences of finger movements.
The task-positive network includes the intraparietal sulcus in each hemisphere;〔Fox, M.D., Corbetta, M., Snyder, A.Z., Vincent, J.L., & Raichle, M.E. (2006). Spontaneous neuronal activity distinguishes human dorsal and ventral attention systems. Proceedings of the National Academy of Sciences, 103, 10046-10051.〕 it is one of two sensory orienting systems in the human brain.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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