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refers to a small triangular field at the frontopolar margin of orbital prefrontal cortex of the human. It borders area 10d medially, area a10p laterally and area 9-46d at the margin rostrally. Defined by multiple criteria, it is fMRI-activated in MOTOR CUE and WORKING MEMORY tasks and deactivated in LANGUAGE STORY-MATH, GAMBLING, EMOTION and MOTOR AVG contrast tasks. It greatly overlaps areas referred to by other authors as 10p, 10 and Fp1 ( Glasser-2016 ).
The equivalent area in the macaque is commonly referred to as 10o ( Ongur-2003 ). As granular prefrontal cortex, It has no architectonic equivalent in the the rat ( Wallis-2012 ).
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