Dr. Garin joins us in this episode to explore the intriguing world of the default mode network (DMN) and its relation to cognitive functions in primates. Resting-state fMRI studies reveal distinct differences in the DMN structure across humans and non-hominoid primates like macaques, marmosets, and mouse lemurs.

Dr. Garin's research presents compelling evidence that the medial prefrontal cortex (mPFC) in non-hominoid primates does not engage with the posterior cingulate cortex (PCC) as robustly as it does in humans. This finding is particularly significant as the strong correlated activity between the PCC and mPFC in humans is a key feature of the human DMN.

However, non-hominoid primates do consistently exhibit a fronto-temporal resting-state network involving the mPFC. Dr. Garin discusses these common functional features shared acr ...