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. 2021 Aug 18;47(1):134–146. doi: 10.1038/s41386-021-01140-0

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Ventral (top) and medial (bottom) views of the macaque monkey (left) and rat (right) frontal cortex. The cytoarchitecture of each area is indicated by different color shading: granular (red), thin lightly granular (pink), dysgranular (orange), agranular (yellow) and allocortex (green). Inset showing areas 24, 32, and 25. Based on connectivity analyses, [33] proposed that the rostral portions of areas 24, 32, and 25 are most similar to primate ACC connectivity. We do not use Cg 1 and Cg 2 nomenclature (a dorsal-ventral distinction) for this reason. Adapted with permission from [125] and [147].