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An evolutionary gap in primate default mode network organization
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DOI：10.1016/j.celrep.2022.110669.png)
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摘要
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The human default mode network (DMN) is engaged at rest and in cognitive states such as self-directed thoughts. Interconnected homologous cortical areas in primates constitute a network considered as the equivalent. Here, based on a cross-species comparison of the DMN between humans and non-hominoid primates (macaques, marmosets, and mouse lemurs), we report major dissimilarities in connectivity profiles. Most importantly, the medial prefrontal cortex (mPFC) of non-hominoid primates is poorly engaged with the posterior cingulate cortex (PCC), though strong correlated activity between the human PCC and the mPFC is a key feature of the human DMN. Instead, a fronto-temporal resting-state network involving the mPFC was detected consistently across non-hominoid primate species. These common functional features shared between non-hominoid primates but not with humans suggest a substantial gap in the organization of the primate's DMN and its associated cognitive functions.
Keyword:
RESTING-STATE FMRI
FUNCTIONAL CONNECTIVITY
FRONTAL-CORTEX
MOUSE LEMUR
BRAIN ATLAS
CONSCIOUSNESS
ISOFLURANE
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6.9
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1.7W
被引数:
10.2W
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