Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Jan 8;4:54. doi: 10.1038/s42003-020-01571-3

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 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/.

PMC Copyright notice

Fig. 2 — Probability of occurrence of a PCGS in the ACC (a), the MCC (b), or in both ACC and MCC (c) in chimpanzee versus human brains. The putative limit between ACC and MCC is represented by the dashed line. CGS and PCGS correspond to the red and yellow lines, respectively. Left diagrams show that, in hemispheres displaying a PCGS (i.e., in n = 183 human brain hemispheres and n = 91 chimpanzee brain hemispheres), the probability of occurrence of a PCGS in the ACC as well as in both the ACC and the MCC is higher in human than in chimpanzee brains (dependent variable: PCGS present (0/1), main effect species: χ²= 49.7, df = 1, p-value = 1.79e−12, logistic regression). By contrast, the probability of occurrence of a PCGS in the MCC is similar in human and chimpanzee (dependent variable: PCGS present in MCC (0/1), main effect species: χ²= 2.9, df = 1, p-value = 0.09, logistic regression). ACC anterior cingulate cortex, LH left hemisphere, MCC mid-cingulate cortex, PCGS paracingulate sulcus, ***p < 0.001, logistic regression; ns non-significant logistic regression.