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Authors & Affiliations
Alaleh Sadraee, Mina Khodadadi, Xavier Helluy, Onur Güntürkün, Mehdi Behroozi
Abstract
Sharing a common ancestor that lived approximately 320 million years ago, avian and mammalian lineages have independently developed seemingly different pallial structures that nonetheless support comparable cognitive functions. Investigating analogous functional architectures in avian brains presents a challenging yet promising avenue. Leveraging resting-state fMRI, a method facilitating direct cross-species comparisons, we aimed to explore Resting State Networks (RSNs) in pigeons. Our study sought to discern detectable RSNs in the awake pigeon brain and assess their spatial distribution. Our findings reveal a bilateral functional connectivity network in motor and primary sensory regions mirroring those found in mammalian counterparts. Notably, these bilateral correlations persist consistently across seed regions and hemispheres, suggesting conserved functional organization. Moreover, the observed network reflects, in part, the underlying anatomical connections among these brain regions in pigeons. Through detailed characterization, our study delves into the anatomical substrates and functional implications of these networks, thereby bridging insights between avian and mammalian brains.