AUTHOR=Okuno Takuto , Ichinohe Noritaka , Woodward Alexander TITLE=A reappraisal of the default mode and frontoparietal networks in the common marmoset brain JOURNAL=Frontiers in Neuroimaging VOLUME=2 YEAR=2024 URL=https://www.frontiersin.org/journals/neuroimaging/articles/10.3389/fnimg.2023.1345643 DOI=10.3389/fnimg.2023.1345643 ISSN=2813-1193 ABSTRACT=

In recent years the common marmoset homolog of the human default mode network (DMN) has been a hot topic of discussion in the marmoset research field. Previously, the posterior cingulate cortex regions (PGM, A19M) and posterior parietal cortex regions (LIP, MIP) were defined as the DMN, but some studies claim that these form the frontoparietal network (FPN). We restarted from a neuroanatomical point of view and identified two DMN candidates: Comp-A (which has been called both the DMN and FPN) and Comp-B. We performed GLM analysis on auditory task-fMRI and found Comp-B to be more appropriate as the DMN, and Comp-A as the FPN. Additionally, through fingerprint analysis, a DMN and FPN in the tasking human was closer to the resting common marmoset. The human DMN appears to have an advanced function that may be underdeveloped in the common marmoset brain.